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Finding the Fourth Proportional to 553,534.80, 830,302.20 and 382,292.70

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Solution

The fourth proportional to 553,534.80, 830,302.20 and 382,292.70 is: 573,439.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,534.80 : 830,302.20 = 382,292.70 : x
  2. Step 2: Convert to fraction form
    553,534.80/830,302.20 = 382,292.70/x
  3. Step 3: Cross multiply
    553,534.80x = 830,302.20 × 382,292.70
  4. Step 4: Simplify right side
    553,534.80x = 317,418,469,853.94
  5. Step 5: Solve for x
    x = 317,418,469,853.94/553,534.80
  6. Step 6: Final answer
    x = 573,439.05

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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.