Home / 772,430.80-1,158,646.20-329,141.20

Finding the Fourth Proportional to 772,430.80, 1,158,646.20 and 329,141.20

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Solution

The fourth proportional to 772,430.80, 1,158,646.20 and 329,141.20 is: 493,711.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,430.80 : 1,158,646.20 = 329,141.20 : x
  2. Step 2: Convert to fraction form
    772,430.80/1,158,646.20 = 329,141.20/x
  3. Step 3: Cross multiply
    772,430.80x = 1,158,646.20 × 329,141.20
  4. Step 4: Simplify right side
    772,430.80x = 381,358,200,643.44
  5. Step 5: Solve for x
    x = 381,358,200,643.44/772,430.80
  6. Step 6: Final answer
    x = 493,711.80

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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.