Home / 417,530,020.80-626,135,466.72-137,345,753.28

Finding the Fourth Proportional to 417,530,020.80, 626,135,466.72 and 137,345,753.28

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Solution

The fourth proportional to 417,530,020.80, 626,135,466.72 and 137,345,753.28 is: 205,966,141.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,530,020.80 : 626,135,466.72 = 137,345,753.28 : x
  2. Step 2: Convert to fraction form
    417,530,020.80/626,135,466.72 = 137,345,753.28/x
  3. Step 3: Cross multiply
    417,530,020.80x = 626,135,466.72 × 137,345,753.28
  4. Step 4: Simplify right side
    417,530,020.80x = 85,997,047,331,982,768
  5. Step 5: Solve for x
    x = 85,997,047,331,982,768/417,530,020.80
  6. Step 6: Final answer
    x = 205,966,141.47

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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.