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Finding the Fourth Proportional to 680,371.76, 938,877.99 and 374,477.18

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Solution

The fourth proportional to 680,371.76, 938,877.99 and 374,477.18 is: 516,759.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,371.76 : 938,877.99 = 374,477.18 : x
  2. Step 2: Convert to fraction form
    680,371.76/938,877.99 = 374,477.18/x
  3. Step 3: Cross multiply
    680,371.76x = 938,877.99 × 374,477.18
  4. Step 4: Simplify right side
    680,371.76x = 351,588,377,364.88
  5. Step 5: Solve for x
    x = 351,588,377,364.88/680,371.76
  6. Step 6: Final answer
    x = 516,759.22

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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.