Home / 676,859.60-1,015,289.40-487,902.80

Finding the Fourth Proportional to 676,859.60, 1,015,289.40 and 487,902.80

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Solution

The fourth proportional to 676,859.60, 1,015,289.40 and 487,902.80 is: 731,854.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,859.60 : 1,015,289.40 = 487,902.80 : x
  2. Step 2: Convert to fraction form
    676,859.60/1,015,289.40 = 487,902.80/x
  3. Step 3: Cross multiply
    676,859.60x = 1,015,289.40 × 487,902.80
  4. Step 4: Simplify right side
    676,859.60x = 495,362,541,070.32
  5. Step 5: Solve for x
    x = 495,362,541,070.32/676,859.60
  6. Step 6: Final answer
    x = 731,854.20

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Double scale
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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.