Home / 831,012.28-1,245,534.27-381,354.15

Finding the Fourth Proportional to 831,012.28, 1,245,534.27 and 381,354.15

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Solution

The fourth proportional to 831,012.28, 1,245,534.27 and 381,354.15 is: 571,579.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,012.28 : 1,245,534.27 = 381,354.15 : x
  2. Step 2: Convert to fraction form
    831,012.28/1,245,534.27 = 381,354.15/x
  3. Step 3: Cross multiply
    831,012.28x = 1,245,534.27 × 381,354.15
  4. Step 4: Simplify right side
    831,012.28x = 474,989,662,831.72
  5. Step 5: Solve for x
    x = 474,989,662,831.72/831,012.28
  6. Step 6: Final answer
    x = 571,579.60

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Double scale
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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.