Home / 614,440.20-921,660.30-509,377.80

Finding the Fourth Proportional to 614,440.20, 921,660.30 and 509,377.80

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Solution

The fourth proportional to 614,440.20, 921,660.30 and 509,377.80 is: 764,066.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,440.20 : 921,660.30 = 509,377.80 : x
  2. Step 2: Convert to fraction form
    614,440.20/921,660.30 = 509,377.80/x
  3. Step 3: Cross multiply
    614,440.20x = 921,660.30 × 509,377.80
  4. Step 4: Simplify right side
    614,440.20x = 469,473,295,961.34
  5. Step 5: Solve for x
    x = 469,473,295,961.34/614,440.20
  6. Step 6: Final answer
    x = 764,066.70

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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.