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Finding the Fourth Proportional to 651,658.20, 977,487.30 and 402,480.60

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Solution

The fourth proportional to 651,658.20, 977,487.30 and 402,480.60 is: 603,720.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,658.20 : 977,487.30 = 402,480.60 : x
  2. Step 2: Convert to fraction form
    651,658.20/977,487.30 = 402,480.60/x
  3. Step 3: Cross multiply
    651,658.20x = 977,487.30 × 402,480.60
  4. Step 4: Simplify right side
    651,658.20x = 393,419,674,996.38
  5. Step 5: Solve for x
    x = 393,419,674,996.38/651,658.20
  6. Step 6: Final answer
    x = 603,720.90

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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.