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Finding the Fourth Proportional to 634,805.28, 876,028.86 and 348,330.15

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Solution

The fourth proportional to 634,805.28, 876,028.86 and 348,330.15 is: 480,694.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,805.28 : 876,028.86 = 348,330.15 : x
  2. Step 2: Convert to fraction form
    634,805.28/876,028.86 = 348,330.15/x
  3. Step 3: Cross multiply
    634,805.28x = 876,028.86 × 348,330.15
  4. Step 4: Simplify right side
    634,805.28x = 305,147,264,208.13
  5. Step 5: Solve for x
    x = 305,147,264,208.13/634,805.28
  6. Step 6: Final answer
    x = 480,694.28

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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.