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Finding the Fourth Proportional to 553,659.80, 830,489.70 and 301,061.30

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Solution

The fourth proportional to 553,659.80, 830,489.70 and 301,061.30 is: 451,591.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,659.80 : 830,489.70 = 301,061.30 : x
  2. Step 2: Convert to fraction form
    553,659.80/830,489.70 = 301,061.30/x
  3. Step 3: Cross multiply
    553,659.80x = 830,489.70 × 301,061.30
  4. Step 4: Simplify right side
    553,659.80x = 250,028,308,718.61
  5. Step 5: Solve for x
    x = 250,028,308,718.61/553,659.80
  6. Step 6: Final answer
    x = 451,591.95

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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.