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Finding the Fourth Proportional to 641,433.66, 885,178.80 and 351,045.06

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Solution

The fourth proportional to 641,433.66, 885,178.80 and 351,045.06 is: 484,442.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,433.66 : 885,178.80 = 351,045.06 : x
  2. Step 2: Convert to fraction form
    641,433.66/885,178.80 = 351,045.06/x
  3. Step 3: Cross multiply
    641,433.66x = 885,178.80 × 351,045.06
  4. Step 4: Simplify right side
    641,433.66x = 310,737,638,775.61
  5. Step 5: Solve for x
    x = 310,737,638,775.61/641,433.66
  6. Step 6: Final answer
    x = 484,442.36

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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.