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Finding the Fourth Proportional to 663,145.80, 994,718.70 and 497,257.80

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Solution

The fourth proportional to 663,145.80, 994,718.70 and 497,257.80 is: 745,886.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,145.80 : 994,718.70 = 497,257.80 : x
  2. Step 2: Convert to fraction form
    663,145.80/994,718.70 = 497,257.80/x
  3. Step 3: Cross multiply
    663,145.80x = 994,718.70 × 497,257.80
  4. Step 4: Simplify right side
    663,145.80x = 494,631,632,380.86
  5. Step 5: Solve for x
    x = 494,631,632,380.86/663,145.80
  6. Step 6: Final answer
    x = 745,886.70

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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.