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Finding the Fourth Proportional to 486,956.40, 730,434.60 and 433,503.60

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Solution

The fourth proportional to 486,956.40, 730,434.60 and 433,503.60 is: 650,255.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,956.40 : 730,434.60 = 433,503.60 : x
  2. Step 2: Convert to fraction form
    486,956.40/730,434.60 = 433,503.60/x
  3. Step 3: Cross multiply
    486,956.40x = 730,434.60 × 433,503.60
  4. Step 4: Simplify right side
    486,956.40x = 316,646,028,664.56
  5. Step 5: Solve for x
    x = 316,646,028,664.56/486,956.40
  6. Step 6: Final answer
    x = 650,255.40

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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.