Home / 831,685.92-1,247,320.88-326,349.60

Finding the Fourth Proportional to 831,685.92, 1,247,320.88 and 326,349.60

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Solution

The fourth proportional to 831,685.92, 1,247,320.88 and 326,349.60 is: 489,442.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,685.92 : 1,247,320.88 = 326,349.60 : x
  2. Step 2: Convert to fraction form
    831,685.92/1,247,320.88 = 326,349.60/x
  3. Step 3: Cross multiply
    831,685.92x = 1,247,320.88 × 326,349.60
  4. Step 4: Simplify right side
    831,685.92x = 407,062,670,259.65
  5. Step 5: Solve for x
    x = 407,062,670,259.65/831,685.92
  6. Step 6: Final answer
    x = 489,442.78

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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.