Home / 1,021,620,640.32-1,409,836,429.23-551,721,915.69

Finding the Fourth Proportional to 1,021,620,640.32, 1,409,836,429.23 and 551,721,915.69

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Solution

The fourth proportional to 1,021,620,640.32, 1,409,836,429.23 and 551,721,915.69 is: 761,376,214.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,620,640.32 : 1,409,836,429.23 = 551,721,915.69 : x
  2. Step 2: Convert to fraction form
    1,021,620,640.32/1,409,836,429.23 = 551,721,915.69/x
  3. Step 3: Cross multiply
    1,021,620,640.32x = 1,409,836,429.23 × 551,721,915.69
  4. Step 4: Simplify right side
    1,021,620,640.32x = 777,837,655,544,324,864
  5. Step 5: Solve for x
    x = 777,837,655,544,324,864/1,021,620,640.32
  6. Step 6: Final answer
    x = 761,376,214.27

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Half scale
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Double scale
Find fourth proportional to 1,021,620,641.32, 1,409,836,430.61 and 551,721,916.69
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.