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Finding the Fourth Proportional to 662,666.40, 994,777.20 and 658,000.80

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Solution

The fourth proportional to 662,666.40, 994,777.20 and 658,000.80 is: 987,773.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,666.40 : 994,777.20 = 658,000.80 : x
  2. Step 2: Convert to fraction form
    662,666.40/994,777.20 = 658,000.80/x
  3. Step 3: Cross multiply
    662,666.40x = 994,777.20 × 658,000.80
  4. Step 4: Simplify right side
    662,666.40x = 654,564,193,421.76
  5. Step 5: Solve for x
    x = 654,564,193,421.76/662,666.40
  6. Step 6: Final answer
    x = 987,773.33

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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.