Home / 687,304.20-1,030,956.30-368,439.60

Finding the Fourth Proportional to 687,304.20, 1,030,956.30 and 368,439.60

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Solution

The fourth proportional to 687,304.20, 1,030,956.30 and 368,439.60 is: 552,659.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,304.20 : 1,030,956.30 = 368,439.60 : x
  2. Step 2: Convert to fraction form
    687,304.20/1,030,956.30 = 368,439.60/x
  3. Step 3: Cross multiply
    687,304.20x = 1,030,956.30 × 368,439.60
  4. Step 4: Simplify right side
    687,304.20x = 379,845,126,789.48
  5. Step 5: Solve for x
    x = 379,845,126,789.48/687,304.20
  6. Step 6: Final answer
    x = 552,659.40

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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.