Home / 485,215,431.18-727,082,536.05-288,090,665.88

Finding the Fourth Proportional to 485,215,431.18, 727,082,536.05 and 288,090,665.88

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Solution

The fourth proportional to 485,215,431.18, 727,082,536.05 and 288,090,665.88 is: 431,696,270.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,215,431.18 : 727,082,536.05 = 288,090,665.88 : x
  2. Step 2: Convert to fraction form
    485,215,431.18/727,082,536.05 = 288,090,665.88/x
  3. Step 3: Cross multiply
    485,215,431.18x = 727,082,536.05 × 288,090,665.88
  4. Step 4: Simplify right side
    485,215,431.18x = 209,465,691,960,363,584
  5. Step 5: Solve for x
    x = 209,465,691,960,363,584/485,215,431.18
  6. Step 6: Final answer
    x = 431,696,270.36

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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.