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Finding the Fourth Proportional to 657,998.60, 987,228.30 and 284,289.80

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Solution

The fourth proportional to 657,998.60, 987,228.30 and 284,289.80 is: 426,534.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,998.60 : 987,228.30 = 284,289.80 : x
  2. Step 2: Convert to fraction form
    657,998.60/987,228.30 = 284,289.80/x
  3. Step 3: Cross multiply
    657,998.60x = 987,228.30 × 284,289.80
  4. Step 4: Simplify right side
    657,998.60x = 280,658,935,961.34
  5. Step 5: Solve for x
    x = 280,658,935,961.34/657,998.60
  6. Step 6: Final answer
    x = 426,534.24

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Similar ratio
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1.5x scale

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.