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Finding the Fourth Proportional to 578,435.46, 866,523.24 and 398,489.10

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Solution

The fourth proportional to 578,435.46, 866,523.24 and 398,489.10 is: 596,955.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,435.46 : 866,523.24 = 398,489.10 : x
  2. Step 2: Convert to fraction form
    578,435.46/866,523.24 = 398,489.10/x
  3. Step 3: Cross multiply
    578,435.46x = 866,523.24 × 398,489.10
  4. Step 4: Simplify right side
    578,435.46x = 345,300,066,036.68
  5. Step 5: Solve for x
    x = 345,300,066,036.68/578,435.46
  6. Step 6: Final answer
    x = 596,955.22

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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.