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Finding the Fourth Proportional to 663,089.48, 994,633.32 and 307,909.28

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Solution

The fourth proportional to 663,089.48, 994,633.32 and 307,909.28 is: 461,863.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,089.48 : 994,633.32 = 307,909.28 : x
  2. Step 2: Convert to fraction form
    663,089.48/994,633.32 = 307,909.28/x
  3. Step 3: Cross multiply
    663,089.48x = 994,633.32 × 307,909.28
  4. Step 4: Simplify right side
    663,089.48x = 306,256,829,425.21
  5. Step 5: Solve for x
    x = 306,256,829,425.21/663,089.48
  6. Step 6: Final answer
    x = 461,863.50

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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.