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Finding the Fourth Proportional to 624,318.62, 861,598.72 and 352,432.57

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Solution

The fourth proportional to 624,318.62, 861,598.72 and 352,432.57 is: 486,378.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,318.62 : 861,598.72 = 352,432.57 : x
  2. Step 2: Convert to fraction form
    624,318.62/861,598.72 = 352,432.57/x
  3. Step 3: Cross multiply
    624,318.62x = 861,598.72 × 352,432.57
  4. Step 4: Simplify right side
    624,318.62x = 303,655,453,826.51
  5. Step 5: Solve for x
    x = 303,655,453,826.51/624,318.62
  6. Step 6: Final answer
    x = 486,378.98

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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.