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Finding the Fourth Proportional to 524,885.12, 724,372.80 and 397,358.72

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Solution

The fourth proportional to 524,885.12, 724,372.80 and 397,358.72 is: 548,378.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,885.12 : 724,372.80 = 397,358.72 : x
  2. Step 2: Convert to fraction form
    524,885.12/724,372.80 = 397,358.72/x
  3. Step 3: Cross multiply
    524,885.12x = 724,372.80 × 397,358.72
  4. Step 4: Simplify right side
    524,885.12x = 287,835,848,610.82
  5. Step 5: Solve for x
    x = 287,835,848,610.82/524,885.12
  6. Step 6: Final answer
    x = 548,378.75

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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.