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Finding the Fourth Proportional to 577,987.60, 866,981.40 and 522,000.40

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Solution

The fourth proportional to 577,987.60, 866,981.40 and 522,000.40 is: 783,000.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,987.60 : 866,981.40 = 522,000.40 : x
  2. Step 2: Convert to fraction form
    577,987.60/866,981.40 = 522,000.40/x
  3. Step 3: Cross multiply
    577,987.60x = 866,981.40 × 522,000.40
  4. Step 4: Simplify right side
    577,987.60x = 452,564,637,592.56
  5. Step 5: Solve for x
    x = 452,564,637,592.56/577,987.60
  6. Step 6: Final answer
    x = 783,000.60

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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.