Home / 1,021,620,633.81-1,409,836,420.27-551,721,909.18

Finding the Fourth Proportional to 1,021,620,633.81, 1,409,836,420.27 and 551,721,909.18

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Solution

The fourth proportional to 1,021,620,633.81, 1,409,836,420.27 and 551,721,909.18 is: 761,376,205.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,620,633.81 : 1,409,836,420.27 = 551,721,909.18 : x
  2. Step 2: Convert to fraction form
    1,021,620,633.81/1,409,836,420.27 = 551,721,909.18/x
  3. Step 3: Cross multiply
    1,021,620,633.81x = 1,409,836,420.27 × 551,721,909.18
  4. Step 4: Simplify right side
    1,021,620,633.81x = 777,837,641,422,861,184
  5. Step 5: Solve for x
    x = 777,837,641,422,861,184/1,021,620,633.81
  6. Step 6: Final answer
    x = 761,376,205.30

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Half scale
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Double scale
Find fourth proportional to 1,021,620,634.81, 1,409,836,421.65 and 551,721,910.18
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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.