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Finding the Fourth Proportional to 439,811.10, 616,979.70 and 439,811.10

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Solution

The fourth proportional to 439,811.10, 616,979.70 and 439,811.10 is: 616,979.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,811.10 : 616,979.70 = 439,811.10 : x
  2. Step 2: Convert to fraction form
    439,811.10/616,979.70 = 439,811.10/x
  3. Step 3: Cross multiply
    439,811.10x = 616,979.70 × 439,811.10
  4. Step 4: Simplify right side
    439,811.10x = 271,354,520,534.67
  5. Step 5: Solve for x
    x = 271,354,520,534.67/439,811.10
  6. Step 6: Final answer
    x = 616,979.70

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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.