Home / 764,607.20-1,146,910.80-391,359.20

Finding the Fourth Proportional to 764,607.20, 1,146,910.80 and 391,359.20

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Solution

The fourth proportional to 764,607.20, 1,146,910.80 and 391,359.20 is: 587,038.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,607.20 : 1,146,910.80 = 391,359.20 : x
  2. Step 2: Convert to fraction form
    764,607.20/1,146,910.80 = 391,359.20/x
  3. Step 3: Cross multiply
    764,607.20x = 1,146,910.80 × 391,359.20
  4. Step 4: Simplify right side
    764,607.20x = 448,854,093,159.36
  5. Step 5: Solve for x
    x = 448,854,093,159.36/764,607.20
  6. Step 6: Final answer
    x = 587,038.80

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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.