Home / 1,280,041,787.43-1,920,063,422.90-359,918,126.06

Finding the Fourth Proportional to 1,280,041,787.43, 1,920,063,422.90 and 359,918,126.06

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Solution

The fourth proportional to 1,280,041,787.43, 1,920,063,422.90 and 359,918,126.06 is: 539,877,397.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,041,787.43 : 1,920,063,422.90 = 359,918,126.06 : x
  2. Step 2: Convert to fraction form
    1,280,041,787.43/1,920,063,422.90 = 359,918,126.06/x
  3. Step 3: Cross multiply
    1,280,041,787.43x = 1,920,063,422.90 × 359,918,126.06
  4. Step 4: Simplify right side
    1,280,041,787.43x = 691,065,629,077,816,704
  5. Step 5: Solve for x
    x = 691,065,629,077,816,704/1,280,041,787.43
  6. Step 6: Final answer
    x = 539,877,397.65

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.