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Finding the Fourth Proportional to 696,649.38, 961,580.50 and 454,968.48

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Solution

The fourth proportional to 696,649.38, 961,580.50 and 454,968.48 is: 627,989.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,649.38 : 961,580.50 = 454,968.48 : x
  2. Step 2: Convert to fraction form
    696,649.38/961,580.50 = 454,968.48/x
  3. Step 3: Cross multiply
    696,649.38x = 961,580.50 × 454,968.48
  4. Step 4: Simplify right side
    696,649.38x = 437,488,818,482.64
  5. Step 5: Solve for x
    x = 437,488,818,482.64/696,649.38
  6. Step 6: Final answer
    x = 627,989.96

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Double scale
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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.