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Finding the Fourth Proportional to 439,901.30, 617,520.70 and 439,901.30

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Solution

The fourth proportional to 439,901.30, 617,520.70 and 439,901.30 is: 617,520.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,901.30 : 617,520.70 = 439,901.30 : x
  2. Step 2: Convert to fraction form
    439,901.30/617,520.70 = 439,901.30/x
  3. Step 3: Cross multiply
    439,901.30x = 617,520.70 × 439,901.30
  4. Step 4: Simplify right side
    439,901.30x = 271,648,158,706.91
  5. Step 5: Solve for x
    x = 271,648,158,706.91/439,901.30
  6. Step 6: Final answer
    x = 617,520.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.