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Finding the Fourth Proportional to 662,820.80, 914,715.60 and 376,331.36

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Solution

The fourth proportional to 662,820.80, 914,715.60 and 376,331.36 is: 519,350.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,820.80 : 914,715.60 = 376,331.36 : x
  2. Step 2: Convert to fraction form
    662,820.80/914,715.60 = 376,331.36/x
  3. Step 3: Cross multiply
    662,820.80x = 914,715.60 × 376,331.36
  4. Step 4: Simplify right side
    662,820.80x = 344,236,165,761.22
  5. Step 5: Solve for x
    x = 344,236,165,761.22/662,820.80
  6. Step 6: Final answer
    x = 519,350.28

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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.