Home / 1,127,280.39-1,555,614.75-643,835.55

Finding the Fourth Proportional to 1,127,280.39, 1,555,614.75 and 643,835.55

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Solution

The fourth proportional to 1,127,280.39, 1,555,614.75 and 643,835.55 is: 888,474.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127,280.39 : 1,555,614.75 = 643,835.55 : x
  2. Step 2: Convert to fraction form
    1,127,280.39/1,555,614.75 = 643,835.55/x
  3. Step 3: Cross multiply
    1,127,280.39x = 1,555,614.75 × 643,835.55
  4. Step 4: Simplify right side
    1,127,280.39x = 1,001,560,078,154.36
  5. Step 5: Solve for x
    x = 1,001,560,078,154.36/1,127,280.39
  6. Step 6: Final answer
    x = 888,474.68

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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.