Home / 485,215,418.41-727,082,516.97-288,090,653.13

Finding the Fourth Proportional to 485,215,418.41, 727,082,516.97 and 288,090,653.13

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Solution

The fourth proportional to 485,215,418.41, 727,082,516.97 and 288,090,653.13 is: 431,696,251.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,215,418.41 : 727,082,516.97 = 288,090,653.13 : x
  2. Step 2: Convert to fraction form
    485,215,418.41/727,082,516.97 = 288,090,653.13/x
  3. Step 3: Cross multiply
    485,215,418.41x = 727,082,516.97 × 288,090,653.13
  4. Step 4: Simplify right side
    485,215,418.41x = 209,465,677,193,291,616
  5. Step 5: Solve for x
    x = 209,465,677,193,291,616/485,215,418.41
  6. Step 6: Final answer
    x = 431,696,251.29

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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.