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Finding the Fourth Proportional to 691,639.75, 955,250.18 and 464,891.59

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Solution

The fourth proportional to 691,639.75, 955,250.18 and 464,891.59 is: 642,079.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,639.75 : 955,250.18 = 464,891.59 : x
  2. Step 2: Convert to fraction form
    691,639.75/955,250.18 = 464,891.59/x
  3. Step 3: Cross multiply
    691,639.75x = 955,250.18 × 464,891.59
  4. Step 4: Simplify right side
    691,639.75x = 444,087,772,703.53
  5. Step 5: Solve for x
    x = 444,087,772,703.53/691,639.75
  6. Step 6: Final answer
    x = 642,079.60

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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.