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Finding the Fourth Proportional to 634,894.20, 876,179.16 and 348,424.56

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Solution

The fourth proportional to 634,894.20, 876,179.16 and 348,424.56 is: 480,839.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,894.20 : 876,179.16 = 348,424.56 : x
  2. Step 2: Convert to fraction form
    634,894.20/876,179.16 = 348,424.56/x
  3. Step 3: Cross multiply
    634,894.20x = 876,179.16 × 348,424.56
  4. Step 4: Simplify right side
    634,894.20x = 305,282,338,304.17
  5. Step 5: Solve for x
    x = 305,282,338,304.17/634,894.20
  6. Step 6: Final answer
    x = 480,839.70

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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.