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Finding the Fourth Proportional to 680,695.20, 940,654.80 and 510,634.08

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Solution

The fourth proportional to 680,695.20, 940,654.80 and 510,634.08 is: 705,646.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,695.20 : 940,654.80 = 510,634.08 : x
  2. Step 2: Convert to fraction form
    680,695.20/940,654.80 = 510,634.08/x
  3. Step 3: Cross multiply
    680,695.20x = 940,654.80 × 510,634.08
  4. Step 4: Simplify right side
    680,695.20x = 480,330,398,395.58
  5. Step 5: Solve for x
    x = 480,330,398,395.58/680,695.20
  6. Step 6: Final answer
    x = 705,646.81

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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.