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Finding the Fourth Proportional to 680,461.87, 939,029.98 and 374,531.71

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Solution

The fourth proportional to 680,461.87, 939,029.98 and 374,531.71 is: 516,849.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,461.87 : 939,029.98 = 374,531.71 : x
  2. Step 2: Convert to fraction form
    680,461.87/939,029.98 = 374,531.71/x
  3. Step 3: Cross multiply
    680,461.87x = 939,029.98 × 374,531.71
  4. Step 4: Simplify right side
    680,461.87x = 351,696,504,150.67
  5. Step 5: Solve for x
    x = 351,696,504,150.67/680,461.87
  6. Step 6: Final answer
    x = 516,849.69

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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.