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Finding the Fourth Proportional to 379,545.29, 523,348.67 and 310,419.53

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Solution

The fourth proportional to 379,545.29, 523,348.67 and 310,419.53 is: 428,032.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,545.29 : 523,348.67 = 310,419.53 : x
  2. Step 2: Convert to fraction form
    379,545.29/523,348.67 = 310,419.53/x
  3. Step 3: Cross multiply
    379,545.29x = 523,348.67 × 310,419.53
  4. Step 4: Simplify right side
    379,545.29x = 162,457,646,326.83
  5. Step 5: Solve for x
    x = 162,457,646,326.83/379,545.29
  6. Step 6: Final answer
    x = 428,032.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.