Home / 991,764.80-1,487,647.20-317,844.80

Finding the Fourth Proportional to 991,764.80, 1,487,647.20 and 317,844.80

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Solution

The fourth proportional to 991,764.80, 1,487,647.20 and 317,844.80 is: 476,767.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,764.80 : 1,487,647.20 = 317,844.80 : x
  2. Step 2: Convert to fraction form
    991,764.80/1,487,647.20 = 317,844.80/x
  3. Step 3: Cross multiply
    991,764.80x = 1,487,647.20 × 317,844.80
  4. Step 4: Simplify right side
    991,764.80x = 472,840,926,754.56
  5. Step 5: Solve for x
    x = 472,840,926,754.56/991,764.80
  6. Step 6: Final answer
    x = 476,767.20

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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.