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Finding the Fourth Proportional to 524,947.80, 787,421.70 and 324,618.60

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Solution

The fourth proportional to 524,947.80, 787,421.70 and 324,618.60 is: 486,927.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,947.80 : 787,421.70 = 324,618.60 : x
  2. Step 2: Convert to fraction form
    524,947.80/787,421.70 = 324,618.60/x
  3. Step 3: Cross multiply
    524,947.80x = 787,421.70 × 324,618.60
  4. Step 4: Simplify right side
    524,947.80x = 255,611,729,863.62
  5. Step 5: Solve for x
    x = 255,611,729,863.62/524,947.80
  6. Step 6: Final answer
    x = 486,927.90

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Half scale
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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.