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Finding the Fourth Proportional to 645,248.72, 890,437.84 and 358,766.30

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Solution

The fourth proportional to 645,248.72, 890,437.84 and 358,766.30 is: 495,094.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,248.72 : 890,437.84 = 358,766.30 : x
  2. Step 2: Convert to fraction form
    645,248.72/890,437.84 = 358,766.30/x
  3. Step 3: Cross multiply
    645,248.72x = 890,437.84 × 358,766.30
  4. Step 4: Simplify right side
    645,248.72x = 319,459,090,565.97
  5. Step 5: Solve for x
    x = 319,459,090,565.97/645,248.72
  6. Step 6: Final answer
    x = 495,094.50

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