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Finding the Fourth Proportional to 667,802.40, 921,565.53 and 361,887.27

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Solution

The fourth proportional to 667,802.40, 921,565.53 and 361,887.27 is: 499,403.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,802.40 : 921,565.53 = 361,887.27 : x
  2. Step 2: Convert to fraction form
    667,802.40/921,565.53 = 361,887.27/x
  3. Step 3: Cross multiply
    667,802.40x = 921,565.53 × 361,887.27
  4. Step 4: Simplify right side
    667,802.40x = 333,502,833,777.80
  5. Step 5: Solve for x
    x = 333,502,833,777.80/667,802.40
  6. Step 6: Final answer
    x = 499,403.47

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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.