Home / 829,870.20-1,244,805.30-409,966.20

Finding the Fourth Proportional to 829,870.20, 1,244,805.30 and 409,966.20

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Solution

The fourth proportional to 829,870.20, 1,244,805.30 and 409,966.20 is: 614,949.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,870.20 : 1,244,805.30 = 409,966.20 : x
  2. Step 2: Convert to fraction form
    829,870.20/1,244,805.30 = 409,966.20/x
  3. Step 3: Cross multiply
    829,870.20x = 1,244,805.30 × 409,966.20
  4. Step 4: Simplify right side
    829,870.20x = 510,328,098,580.86
  5. Step 5: Solve for x
    x = 510,328,098,580.86/829,870.20
  6. Step 6: Final answer
    x = 614,949.30

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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.