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Finding the Fourth Proportional to 459,312.90, 687,414.15 and 403,325.70

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Solution

The fourth proportional to 459,312.90, 687,414.15 and 403,325.70 is: 603,622.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,312.90 : 687,414.15 = 403,325.70 : x
  2. Step 2: Convert to fraction form
    459,312.90/687,414.15 = 403,325.70/x
  3. Step 3: Cross multiply
    459,312.90x = 687,414.15 × 403,325.70
  4. Step 4: Simplify right side
    459,312.90x = 277,251,793,238.66
  5. Step 5: Solve for x
    x = 277,251,793,238.66/459,312.90
  6. Step 6: Final answer
    x = 603,622.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.