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Finding the Fourth Proportional to 614,360.40, 921,540.60 and 348,639.90

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Solution

The fourth proportional to 614,360.40, 921,540.60 and 348,639.90 is: 522,959.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,360.40 : 921,540.60 = 348,639.90 : x
  2. Step 2: Convert to fraction form
    614,360.40/921,540.60 = 348,639.90/x
  3. Step 3: Cross multiply
    614,360.40x = 921,540.60 × 348,639.90
  4. Step 4: Simplify right side
    614,360.40x = 321,285,822,629.94
  5. Step 5: Solve for x
    x = 321,285,822,629.94/614,360.40
  6. Step 6: Final answer
    x = 522,959.85

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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.