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Finding the Fourth Proportional to 577,989.60, 865,882.80 and 311,661.60

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Solution

The fourth proportional to 577,989.60, 865,882.80 and 311,661.60 is: 466,898.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,989.60 : 865,882.80 = 311,661.60 : x
  2. Step 2: Convert to fraction form
    577,989.60/865,882.80 = 311,661.60/x
  3. Step 3: Cross multiply
    577,989.60x = 865,882.80 × 311,661.60
  4. Step 4: Simplify right side
    577,989.60x = 269,862,418,860.48
  5. Step 5: Solve for x
    x = 269,862,418,860.48/577,989.60
  6. Step 6: Final answer
    x = 466,898.40

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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.