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Finding the Fourth Proportional to 542,630.56, 748,877.52 and 316,271.20

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Solution

The fourth proportional to 542,630.56, 748,877.52 and 316,271.20 is: 436,481.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,630.56 : 748,877.52 = 316,271.20 : x
  2. Step 2: Convert to fraction form
    542,630.56/748,877.52 = 316,271.20/x
  3. Step 3: Cross multiply
    542,630.56x = 748,877.52 × 316,271.20
  4. Step 4: Simplify right side
    542,630.56x = 236,848,391,903.42
  5. Step 5: Solve for x
    x = 236,848,391,903.42/542,630.56
  6. Step 6: Final answer
    x = 436,481.85

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.