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Finding the Fourth Proportional to 527,794.80, 791,692.20 and 487,244.40

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Solution

The fourth proportional to 527,794.80, 791,692.20 and 487,244.40 is: 730,866.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,794.80 : 791,692.20 = 487,244.40 : x
  2. Step 2: Convert to fraction form
    527,794.80/791,692.20 = 487,244.40/x
  3. Step 3: Cross multiply
    527,794.80x = 791,692.20 × 487,244.40
  4. Step 4: Simplify right side
    527,794.80x = 385,747,590,973.68
  5. Step 5: Solve for x
    x = 385,747,590,973.68/527,794.80
  6. Step 6: Final answer
    x = 730,866.60

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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.