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Finding the Fourth Proportional to 535,878.34, 739,484.57 and 318,096.20

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Solution

The fourth proportional to 535,878.34, 739,484.57 and 318,096.20 is: 438,956.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,878.34 : 739,484.57 = 318,096.20 : x
  2. Step 2: Convert to fraction form
    535,878.34/739,484.57 = 318,096.20/x
  3. Step 3: Cross multiply
    535,878.34x = 739,484.57 × 318,096.20
  4. Step 4: Simplify right side
    535,878.34x = 235,227,226,387.73
  5. Step 5: Solve for x
    x = 235,227,226,387.73/535,878.34
  6. Step 6: Final answer
    x = 438,956.40

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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.