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Finding the Fourth Proportional to 506,537.10, 759,805.65 and 388,439.10

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Solution

The fourth proportional to 506,537.10, 759,805.65 and 388,439.10 is: 582,658.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,537.10 : 759,805.65 = 388,439.10 : x
  2. Step 2: Convert to fraction form
    506,537.10/759,805.65 = 388,439.10/x
  3. Step 3: Cross multiply
    506,537.10x = 759,805.65 × 388,439.10
  4. Step 4: Simplify right side
    506,537.10x = 295,138,222,860.92
  5. Step 5: Solve for x
    x = 295,138,222,860.92/506,537.10
  6. Step 6: Final answer
    x = 582,658.65

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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.