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Finding the Fourth Proportional to 517,605.72, 776,487 and 162,586.38

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Solution

The fourth proportional to 517,605.72, 776,487 and 162,586.38 is: 243,904.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,605.72 : 776,487 = 162,586.38 : x
  2. Step 2: Convert to fraction form
    517,605.72/776,487 = 162,586.38/x
  3. Step 3: Cross multiply
    517,605.72x = 776,487 × 162,586.38
  4. Step 4: Simplify right side
    517,605.72x = 126,246,210,447.06
  5. Step 5: Solve for x
    x = 126,246,210,447.06/517,605.72
  6. Step 6: Final answer
    x = 243,904.20

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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.