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Finding the Fourth Proportional to 680,217.87, 938,672.47 and 370,121.74

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Solution

The fourth proportional to 680,217.87, 938,672.47 and 370,121.74 is: 510,752.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,217.87 : 938,672.47 = 370,121.74 : x
  2. Step 2: Convert to fraction form
    680,217.87/938,672.47 = 370,121.74/x
  3. Step 3: Cross multiply
    680,217.87x = 938,672.47 × 370,121.74
  4. Step 4: Simplify right side
    680,217.87x = 347,423,087,886.50
  5. Step 5: Solve for x
    x = 347,423,087,886.50/680,217.87
  6. Step 6: Final answer
    x = 510,752.66

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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.