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Finding the Fourth Proportional to 543,398.68, 749,684.46 and 400,500.28

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Solution

The fourth proportional to 543,398.68, 749,684.46 and 400,500.28 is: 552,538.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,398.68 : 749,684.46 = 400,500.28 : x
  2. Step 2: Convert to fraction form
    543,398.68/749,684.46 = 400,500.28/x
  3. Step 3: Cross multiply
    543,398.68x = 749,684.46 × 400,500.28
  4. Step 4: Simplify right side
    543,398.68x = 300,248,836,141.65
  5. Step 5: Solve for x
    x = 300,248,836,141.65/543,398.68
  6. Step 6: Final answer
    x = 552,538.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.