Home / 990,853.20-1,367,326.44-538,143.12

Finding the Fourth Proportional to 990,853.20, 1,367,326.44 and 538,143.12

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Solution

The fourth proportional to 990,853.20, 1,367,326.44 and 538,143.12 is: 742,609.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,853.20 : 1,367,326.44 = 538,143.12 : x
  2. Step 2: Convert to fraction form
    990,853.20/1,367,326.44 = 538,143.12/x
  3. Step 3: Cross multiply
    990,853.20x = 1,367,326.44 × 538,143.12
  4. Step 4: Simplify right side
    990,853.20x = 735,817,316,480.09
  5. Step 5: Solve for x
    x = 735,817,316,480.09/990,853.20
  6. Step 6: Final answer
    x = 742,609.82

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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.