Home / 831,780.20-1,247,670.30-458,532.20

Finding the Fourth Proportional to 831,780.20, 1,247,670.30 and 458,532.20

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Solution

The fourth proportional to 831,780.20, 1,247,670.30 and 458,532.20 is: 687,798.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,780.20 : 1,247,670.30 = 458,532.20 : x
  2. Step 2: Convert to fraction form
    831,780.20/1,247,670.30 = 458,532.20/x
  3. Step 3: Cross multiply
    831,780.20x = 1,247,670.30 × 458,532.20
  4. Step 4: Simplify right side
    831,780.20x = 572,097,007,533.66
  5. Step 5: Solve for x
    x = 572,097,007,533.66/831,780.20
  6. Step 6: Final answer
    x = 687,798.30

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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.