Home / 831,443.20-1,247,164.80-432,862.45

Finding the Fourth Proportional to 831,443.20, 1,247,164.80 and 432,862.45

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Solution

The fourth proportional to 831,443.20, 1,247,164.80 and 432,862.45 is: 649,293.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,443.20 : 1,247,164.80 = 432,862.45 : x
  2. Step 2: Convert to fraction form
    831,443.20/1,247,164.80 = 432,862.45/x
  3. Step 3: Cross multiply
    831,443.20x = 1,247,164.80 × 432,862.45
  4. Step 4: Simplify right side
    831,443.20x = 539,850,810,881.76
  5. Step 5: Solve for x
    x = 539,850,810,881.76/831,443.20
  6. Step 6: Final answer
    x = 649,293.68

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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.