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Finding the Fourth Proportional to 641,433.72, 885,178.88 and 351,045.12

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Solution

The fourth proportional to 641,433.72, 885,178.88 and 351,045.12 is: 484,442.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,433.72 : 885,178.88 = 351,045.12 : x
  2. Step 2: Convert to fraction form
    641,433.72/885,178.88 = 351,045.12/x
  3. Step 3: Cross multiply
    641,433.72x = 885,178.88 × 351,045.12
  4. Step 4: Simplify right side
    641,433.72x = 310,737,724,052.55
  5. Step 5: Solve for x
    x = 310,737,724,052.55/641,433.72
  6. Step 6: Final answer
    x = 484,442.45

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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.