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Finding the Fourth Proportional to 634,139.88, 875,112.80 and 347,653.82

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Solution

The fourth proportional to 634,139.88, 875,112.80 and 347,653.82 is: 479,762.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,139.88 : 875,112.80 = 347,653.82 : x
  2. Step 2: Convert to fraction form
    634,139.88/875,112.80 = 347,653.82/x
  3. Step 3: Cross multiply
    634,139.88x = 875,112.80 × 347,653.82
  4. Step 4: Simplify right side
    634,139.88x = 304,236,307,850.90
  5. Step 5: Solve for x
    x = 304,236,307,850.90/634,139.88
  6. Step 6: Final answer
    x = 479,762.14

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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.