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Finding the Fourth Proportional to 564,646.88, 779,188.20 and 310,002.32

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Solution

The fourth proportional to 564,646.88, 779,188.20 and 310,002.32 is: 427,789.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,646.88 : 779,188.20 = 310,002.32 : x
  2. Step 2: Convert to fraction form
    564,646.88/779,188.20 = 310,002.32/x
  3. Step 3: Cross multiply
    564,646.88x = 779,188.20 × 310,002.32
  4. Step 4: Simplify right side
    564,646.88x = 241,550,149,716.62
  5. Step 5: Solve for x
    x = 241,550,149,716.62/564,646.88
  6. Step 6: Final answer
    x = 427,789.75

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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.