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Finding the Fourth Proportional to 537,878.20, 806,817.30 and 479,817.40

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Solution

The fourth proportional to 537,878.20, 806,817.30 and 479,817.40 is: 719,726.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,878.20 : 806,817.30 = 479,817.40 : x
  2. Step 2: Convert to fraction form
    537,878.20/806,817.30 = 479,817.40/x
  3. Step 3: Cross multiply
    537,878.20x = 806,817.30 × 479,817.40
  4. Step 4: Simplify right side
    537,878.20x = 387,124,979,161.02
  5. Step 5: Solve for x
    x = 387,124,979,161.02/537,878.20
  6. Step 6: Final answer
    x = 719,726.10

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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.