Home / 873,418.28-1,205,340.76-491,458.64

Finding the Fourth Proportional to 873,418.28, 1,205,340.76 and 491,458.64

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Solution

The fourth proportional to 873,418.28, 1,205,340.76 and 491,458.64 is: 678,226.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,418.28 : 1,205,340.76 = 491,458.64 : x
  2. Step 2: Convert to fraction form
    873,418.28/1,205,340.76 = 491,458.64/x
  3. Step 3: Cross multiply
    873,418.28x = 1,205,340.76 × 491,458.64
  4. Step 4: Simplify right side
    873,418.28x = 592,375,130,646.17
  5. Step 5: Solve for x
    x = 592,375,130,646.17/873,418.28
  6. Step 6: Final answer
    x = 678,226.17

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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.