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Finding the Fourth Proportional to 641,690.32, 963,481.72 and 357,935.28

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Solution

The fourth proportional to 641,690.32, 963,481.72 and 357,935.28 is: 537,430.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,690.32 : 963,481.72 = 357,935.28 : x
  2. Step 2: Convert to fraction form
    641,690.32/963,481.72 = 357,935.28/x
  3. Step 3: Cross multiply
    641,690.32x = 963,481.72 × 357,935.28
  4. Step 4: Simplify right side
    641,690.32x = 344,864,099,223.08
  5. Step 5: Solve for x
    x = 344,864,099,223.08/641,690.32
  6. Step 6: Final answer
    x = 537,430.73

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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.