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Finding the Fourth Proportional to 517,130.85, 775,696.28 and 508,382.85

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Solution

The fourth proportional to 517,130.85, 775,696.28 and 508,382.85 is: 762,574.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,130.85 : 775,696.28 = 508,382.85 : x
  2. Step 2: Convert to fraction form
    517,130.85/775,696.28 = 508,382.85/x
  3. Step 3: Cross multiply
    517,130.85x = 775,696.28 × 508,382.85
  4. Step 4: Simplify right side
    517,130.85x = 394,350,683,018.88
  5. Step 5: Solve for x
    x = 394,350,683,018.88/517,130.85
  6. Step 6: Final answer
    x = 762,574.28

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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.