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Finding the Fourth Proportional to 663,323, 915,410.46 and 376,891.60

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Solution

The fourth proportional to 663,323, 915,410.46 and 376,891.60 is: 520,124.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,323 : 915,410.46 = 376,891.60 : x
  2. Step 2: Convert to fraction form
    663,323/915,410.46 = 376,891.60/x
  3. Step 3: Cross multiply
    663,323x = 915,410.46 × 376,891.60
  4. Step 4: Simplify right side
    663,323x = 345,010,512,926.14
  5. Step 5: Solve for x
    x = 345,010,512,926.14/663,323
  6. Step 6: Final answer
    x = 520,124.45

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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.