Home / 1,021,620,490.87-1,409,836,223.44-551,721,766.55

Finding the Fourth Proportional to 1,021,620,490.87, 1,409,836,223.44 and 551,721,766.55

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Solution

The fourth proportional to 1,021,620,490.87, 1,409,836,223.44 and 551,721,766.55 is: 761,376,008.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,620,490.87 : 1,409,836,223.44 = 551,721,766.55 : x
  2. Step 2: Convert to fraction form
    1,021,620,490.87/1,409,836,223.44 = 551,721,766.55/x
  3. Step 3: Cross multiply
    1,021,620,490.87x = 1,409,836,223.44 × 551,721,766.55
  4. Step 4: Simplify right side
    1,021,620,490.87x = 777,837,331,744,642,560
  5. Step 5: Solve for x
    x = 777,837,331,744,642,560/1,021,620,490.87
  6. Step 6: Final answer
    x = 761,376,008.70

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Double scale
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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.