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Finding the Fourth Proportional to 906,906.70, 1,361,407.65 and 487,002.70

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Solution

The fourth proportional to 906,906.70, 1,361,407.65 and 487,002.70 is: 731,066.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,906.70 : 1,361,407.65 = 487,002.70 : x
  2. Step 2: Convert to fraction form
    906,906.70/1,361,407.65 = 487,002.70/x
  3. Step 3: Cross multiply
    906,906.70x = 1,361,407.65 × 487,002.70
  4. Step 4: Simplify right side
    906,906.70x = 663,009,201,350.66
  5. Step 5: Solve for x
    x = 663,009,201,350.66/906,906.70
  6. Step 6: Final answer
    x = 731,066.60

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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.