Home / 738,781,979.20-1,107,442,024.80-349,921,326.40

Finding the Fourth Proportional to 738,781,979.20, 1,107,442,024.80 and 349,921,326.40

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Solution

The fourth proportional to 738,781,979.20, 1,107,442,024.80 and 349,921,326.40 is: 524,535,780.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,781,979.20 : 1,107,442,024.80 = 349,921,326.40 : x
  2. Step 2: Convert to fraction form
    738,781,979.20/1,107,442,024.80 = 349,921,326.40/x
  3. Step 3: Cross multiply
    738,781,979.20x = 1,107,442,024.80 × 349,921,326.40
  4. Step 4: Simplify right side
    738,781,979.20x = 387,517,582,229,117,632
  5. Step 5: Solve for x
    x = 387,517,582,229,117,632/738,781,979.20
  6. Step 6: Final answer
    x = 524,535,780.70

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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.