Home / 485,215,428.49-727,082,532.19-288,090,663.41

Finding the Fourth Proportional to 485,215,428.49, 727,082,532.19 and 288,090,663.41

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Solution

The fourth proportional to 485,215,428.49, 727,082,532.19 and 288,090,663.41 is: 431,696,266.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,215,428.49 : 727,082,532.19 = 288,090,663.41 : x
  2. Step 2: Convert to fraction form
    485,215,428.49/727,082,532.19 = 288,090,663.41/x
  3. Step 3: Cross multiply
    485,215,428.49x = 727,082,532.19 × 288,090,663.41
  4. Step 4: Simplify right side
    485,215,428.49x = 209,465,689,054,617,600
  5. Step 5: Solve for x
    x = 209,465,689,054,617,600/485,215,428.49
  6. Step 6: Final answer
    x = 431,696,266.76

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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.