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Finding the Fourth Proportional to 696,340, 960,988.08 and 394,631.20

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Solution

The fourth proportional to 696,340, 960,988.08 and 394,631.20 is: 544,613.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,340 : 960,988.08 = 394,631.20 : x
  2. Step 2: Convert to fraction form
    696,340/960,988.08 = 394,631.20/x
  3. Step 3: Cross multiply
    696,340x = 960,988.08 × 394,631.20
  4. Step 4: Simplify right side
    696,340x = 379,235,879,196.10
  5. Step 5: Solve for x
    x = 379,235,879,196.10/696,340
  6. Step 6: Final answer
    x = 544,613.09

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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.