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Finding the Fourth Proportional to 680,117.94, 938,569.95 and 374,198.36

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Solution

The fourth proportional to 680,117.94, 938,569.95 and 374,198.36 is: 516,397.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,117.94 : 938,569.95 = 374,198.36 : x
  2. Step 2: Convert to fraction form
    680,117.94/938,569.95 = 374,198.36/x
  3. Step 3: Cross multiply
    680,117.94x = 938,569.95 × 374,198.36
  4. Step 4: Simplify right side
    680,117.94x = 351,211,331,342.43
  5. Step 5: Solve for x
    x = 351,211,331,342.43/680,117.94
  6. Step 6: Final answer
    x = 516,397.69

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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.