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Finding the Fourth Proportional to 506,516.10, 759,774.15 and 388,418.10

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Solution

The fourth proportional to 506,516.10, 759,774.15 and 388,418.10 is: 582,627.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,516.10 : 759,774.15 = 388,418.10 : x
  2. Step 2: Convert to fraction form
    506,516.10/759,774.15 = 388,418.10/x
  3. Step 3: Cross multiply
    506,516.10x = 759,774.15 × 388,418.10
  4. Step 4: Simplify right side
    506,516.10x = 295,110,031,772.12
  5. Step 5: Solve for x
    x = 295,110,031,772.12/506,516.10
  6. Step 6: Final answer
    x = 582,627.15

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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.