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Finding the Fourth Proportional to 663,018.32, 914,966.34 and 376,538.34

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Solution

The fourth proportional to 663,018.32, 914,966.34 and 376,538.34 is: 519,623.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,018.32 : 914,966.34 = 376,538.34 : x
  2. Step 2: Convert to fraction form
    663,018.32/914,966.34 = 376,538.34/x
  3. Step 3: Cross multiply
    663,018.32x = 914,966.34 × 376,538.34
  4. Step 4: Simplify right side
    663,018.32x = 344,519,906,819.48
  5. Step 5: Solve for x
    x = 344,519,906,819.48/663,018.32
  6. Step 6: Final answer
    x = 519,623.51

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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.