Home / 990,864.82-1,367,400.45-538,155.82

Finding the Fourth Proportional to 990,864.82, 1,367,400.45 and 538,155.82

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Solution

The fourth proportional to 990,864.82, 1,367,400.45 and 538,155.82 is: 742,658.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,864.82 : 1,367,400.45 = 538,155.82 : x
  2. Step 2: Convert to fraction form
    990,864.82/1,367,400.45 = 538,155.82/x
  3. Step 3: Cross multiply
    990,864.82x = 1,367,400.45 × 538,155.82
  4. Step 4: Simplify right side
    990,864.82x = 735,874,510,438.12
  5. Step 5: Solve for x
    x = 735,874,510,438.12/990,864.82
  6. Step 6: Final answer
    x = 742,658.83

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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.