Home / 831,778.20-1,247,667.30-458,530.20

Finding the Fourth Proportional to 831,778.20, 1,247,667.30 and 458,530.20

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Solution

The fourth proportional to 831,778.20, 1,247,667.30 and 458,530.20 is: 687,795.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,778.20 : 1,247,667.30 = 458,530.20 : x
  2. Step 2: Convert to fraction form
    831,778.20/1,247,667.30 = 458,530.20/x
  3. Step 3: Cross multiply
    831,778.20x = 1,247,667.30 × 458,530.20
  4. Step 4: Simplify right side
    831,778.20x = 572,093,136,602.46
  5. Step 5: Solve for x
    x = 572,093,136,602.46/831,778.20
  6. Step 6: Final answer
    x = 687,795.30

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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.