Home / 652,140.48-899,935.20-397,398.72

Finding the Fourth Proportional to 652,140.48, 899,935.20 and 397,398.72

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Solution

The fourth proportional to 652,140.48, 899,935.20 and 397,398.72 is: 548,398.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,140.48 : 899,935.20 = 397,398.72 : x
  2. Step 2: Convert to fraction form
    652,140.48/899,935.20 = 397,398.72/x
  3. Step 3: Cross multiply
    652,140.48x = 899,935.20 × 397,398.72
  4. Step 4: Simplify right side
    652,140.48x = 357,633,096,562.94
  5. Step 5: Solve for x
    x = 357,633,096,562.94/652,140.48
  6. Step 6: Final answer
    x = 548,398.86

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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.