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Finding the Fourth Proportional to 610,719.40, 916,079.10 and 453,255.40

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Solution

The fourth proportional to 610,719.40, 916,079.10 and 453,255.40 is: 679,883.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,719.40 : 916,079.10 = 453,255.40 : x
  2. Step 2: Convert to fraction form
    610,719.40/916,079.10 = 453,255.40/x
  3. Step 3: Cross multiply
    610,719.40x = 916,079.10 × 453,255.40
  4. Step 4: Simplify right side
    610,719.40x = 415,217,798,902.14
  5. Step 5: Solve for x
    x = 415,217,798,902.14/610,719.40
  6. Step 6: Final answer
    x = 679,883.10

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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.