Home / 431,356,007.80-647,034,011.70-268,097,332.60

Finding the Fourth Proportional to 431,356,007.80, 647,034,011.70 and 268,097,332.60

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Solution

The fourth proportional to 431,356,007.80, 647,034,011.70 and 268,097,332.60 is: 402,145,998.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,356,007.80 : 647,034,011.70 = 268,097,332.60 : x
  2. Step 2: Convert to fraction form
    431,356,007.80/647,034,011.70 = 268,097,332.60/x
  3. Step 3: Cross multiply
    431,356,007.80x = 647,034,011.70 × 268,097,332.60
  4. Step 4: Simplify right side
    431,356,007.80x = 173,468,092,638,247,200
  5. Step 5: Solve for x
    x = 173,468,092,638,247,200/431,356,007.80
  6. Step 6: Final answer
    x = 402,145,998.90

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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.