Home / 772,429.80-1,158,644.70-329,140.20

Finding the Fourth Proportional to 772,429.80, 1,158,644.70 and 329,140.20

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Solution

The fourth proportional to 772,429.80, 1,158,644.70 and 329,140.20 is: 493,710.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,429.80 : 1,158,644.70 = 329,140.20 : x
  2. Step 2: Convert to fraction form
    772,429.80/1,158,644.70 = 329,140.20/x
  3. Step 3: Cross multiply
    772,429.80x = 1,158,644.70 × 329,140.20
  4. Step 4: Simplify right side
    772,429.80x = 381,356,548,286.94
  5. Step 5: Solve for x
    x = 381,356,548,286.94/772,429.80
  6. Step 6: Final answer
    x = 493,710.30

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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.