Home / 515,748.72-773,621.98-291,007.20

Finding the Fourth Proportional to 515,748.72, 773,621.98 and 291,007.20

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Solution

The fourth proportional to 515,748.72, 773,621.98 and 291,007.20 is: 436,510.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,748.72 : 773,621.98 = 291,007.20 : x
  2. Step 2: Convert to fraction form
    515,748.72/773,621.98 = 291,007.20/x
  3. Step 3: Cross multiply
    515,748.72x = 773,621.98 × 291,007.20
  4. Step 4: Simplify right side
    515,748.72x = 225,129,566,258.26
  5. Step 5: Solve for x
    x = 225,129,566,258.26/515,748.72
  6. Step 6: Final answer
    x = 436,510.18

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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.