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Finding the Fourth Proportional to 590,011.57, 813,921.19 and 372,489.81

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Solution

The fourth proportional to 590,011.57, 813,921.19 and 372,489.81 is: 513,849.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,011.57 : 813,921.19 = 372,489.81 : x
  2. Step 2: Convert to fraction form
    590,011.57/813,921.19 = 372,489.81/x
  3. Step 3: Cross multiply
    590,011.57x = 813,921.19 × 372,489.81
  4. Step 4: Simplify right side
    590,011.57x = 303,177,348,486.85
  5. Step 5: Solve for x
    x = 303,177,348,486.85/590,011.57
  6. Step 6: Final answer
    x = 513,849.84

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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.