Home / 527,914.80-791,872.20-509,252.40

Finding the Fourth Proportional to 527,914.80, 791,872.20 and 509,252.40

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Solution

The fourth proportional to 527,914.80, 791,872.20 and 509,252.40 is: 763,878.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,914.80 : 791,872.20 = 509,252.40 : x
  2. Step 2: Convert to fraction form
    527,914.80/791,872.20 = 509,252.40/x
  3. Step 3: Cross multiply
    527,914.80x = 791,872.20 × 509,252.40
  4. Step 4: Simplify right side
    527,914.80x = 403,262,818,343.28
  5. Step 5: Solve for x
    x = 403,262,818,343.28/527,914.80
  6. Step 6: Final answer
    x = 763,878.60

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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.