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Finding the Fourth Proportional to 641,690.89, 963,482.54 and 357,935.84

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Solution

The fourth proportional to 641,690.89, 963,482.54 and 357,935.84 is: 537,431.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,690.89 : 963,482.54 = 357,935.84 : x
  2. Step 2: Convert to fraction form
    641,690.89/963,482.54 = 357,935.84/x
  3. Step 3: Cross multiply
    641,690.89x = 963,482.54 × 357,935.84
  4. Step 4: Simplify right side
    641,690.89x = 344,864,932,280.23
  5. Step 5: Solve for x
    x = 344,864,932,280.23/641,690.89
  6. Step 6: Final answer
    x = 537,431.55

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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.