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Finding the Fourth Proportional to 626,375.71, 864,386.49 and 354,438.66

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Solution

The fourth proportional to 626,375.71, 864,386.49 and 354,438.66 is: 489,118.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,375.71 : 864,386.49 = 354,438.66 : x
  2. Step 2: Convert to fraction form
    626,375.71/864,386.49 = 354,438.66/x
  3. Step 3: Cross multiply
    626,375.71x = 864,386.49 × 354,438.66
  4. Step 4: Simplify right side
    626,375.71x = 306,371,989,237.70
  5. Step 5: Solve for x
    x = 306,371,989,237.70/626,375.71
  6. Step 6: Final answer
    x = 489,118.57

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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.