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Finding the Fourth Proportional to 666,021.60, 999,032.40 and 659,023.20

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Solution

The fourth proportional to 666,021.60, 999,032.40 and 659,023.20 is: 988,534.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,021.60 : 999,032.40 = 659,023.20 : x
  2. Step 2: Convert to fraction form
    666,021.60/999,032.40 = 659,023.20/x
  3. Step 3: Cross multiply
    666,021.60x = 999,032.40 × 659,023.20
  4. Step 4: Simplify right side
    666,021.60x = 658,385,529,151.68
  5. Step 5: Solve for x
    x = 658,385,529,151.68/666,021.60
  6. Step 6: Final answer
    x = 988,534.80

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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.