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Finding the Fourth Proportional to 528,069.10, 792,103.65 and 318,117.10

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Solution

The fourth proportional to 528,069.10, 792,103.65 and 318,117.10 is: 477,175.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,069.10 : 792,103.65 = 318,117.10 : x
  2. Step 2: Convert to fraction form
    528,069.10/792,103.65 = 318,117.10/x
  3. Step 3: Cross multiply
    528,069.10x = 792,103.65 × 318,117.10
  4. Step 4: Simplify right side
    528,069.10x = 251,981,716,037.42
  5. Step 5: Solve for x
    x = 251,981,716,037.42/528,069.10
  6. Step 6: Final answer
    x = 477,175.65

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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.