Home / 746,634.60-1,121,118.30-431,706.60

Finding the Fourth Proportional to 746,634.60, 1,121,118.30 and 431,706.60

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Solution

The fourth proportional to 746,634.60, 1,121,118.30 and 431,706.60 is: 648,234.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    746,634.60 : 1,121,118.30 = 431,706.60 : x
  2. Step 2: Convert to fraction form
    746,634.60/1,121,118.30 = 431,706.60/x
  3. Step 3: Cross multiply
    746,634.60x = 1,121,118.30 × 431,706.60
  4. Step 4: Simplify right side
    746,634.60x = 483,994,169,490.78
  5. Step 5: Solve for x
    x = 483,994,169,490.78/746,634.60
  6. Step 6: Final answer
    x = 648,234.32

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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.