Home / 509,050.20-763,575.30-485,722.20

Finding the Fourth Proportional to 509,050.20, 763,575.30 and 485,722.20

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Solution

The fourth proportional to 509,050.20, 763,575.30 and 485,722.20 is: 728,583.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,050.20 : 763,575.30 = 485,722.20 : x
  2. Step 2: Convert to fraction form
    509,050.20/763,575.30 = 485,722.20/x
  3. Step 3: Cross multiply
    509,050.20x = 763,575.30 × 485,722.20
  4. Step 4: Simplify right side
    509,050.20x = 370,885,474,581.66
  5. Step 5: Solve for x
    x = 370,885,474,581.66/509,050.20
  6. Step 6: Final answer
    x = 728,583.30

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Half scale
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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.