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Finding the Fourth Proportional to 537,871.20, 806,806.80 and 479,810.40

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Solution

The fourth proportional to 537,871.20, 806,806.80 and 479,810.40 is: 719,715.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,871.20 : 806,806.80 = 479,810.40 : x
  2. Step 2: Convert to fraction form
    537,871.20/806,806.80 = 479,810.40/x
  3. Step 3: Cross multiply
    537,871.20x = 806,806.80 × 479,810.40
  4. Step 4: Simplify right side
    537,871.20x = 387,114,293,430.72
  5. Step 5: Solve for x
    x = 387,114,293,430.72/537,871.20
  6. Step 6: Final answer
    x = 719,715.60

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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.