Home / 742,855.74-1,113,644.12-316,000.73

Finding the Fourth Proportional to 742,855.74, 1,113,644.12 and 316,000.73

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Solution

The fourth proportional to 742,855.74, 1,113,644.12 and 316,000.73 is: 473,729.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,855.74 : 1,113,644.12 = 316,000.73 : x
  2. Step 2: Convert to fraction form
    742,855.74/1,113,644.12 = 316,000.73/x
  3. Step 3: Cross multiply
    742,855.74x = 1,113,644.12 × 316,000.73
  4. Step 4: Simplify right side
    742,855.74x = 351,912,347,731.98
  5. Step 5: Solve for x
    x = 351,912,347,731.98/742,855.74
  6. Step 6: Final answer
    x = 473,729.06

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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.