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Finding the Fourth Proportional to 484,864.56, 669,070.20 and 280,850.25

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Solution

The fourth proportional to 484,864.56, 669,070.20 and 280,850.25 is: 387,548.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,864.56 : 669,070.20 = 280,850.25 : x
  2. Step 2: Convert to fraction form
    484,864.56/669,070.20 = 280,850.25/x
  3. Step 3: Cross multiply
    484,864.56x = 669,070.20 × 280,850.25
  4. Step 4: Simplify right side
    484,864.56x = 187,908,532,937.55
  5. Step 5: Solve for x
    x = 187,908,532,937.55/484,864.56
  6. Step 6: Final answer
    x = 387,548.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.