Home / 389,799.80-538,439.97-313,605.93

Finding the Fourth Proportional to 389,799.80, 538,439.97 and 313,605.93

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Solution

The fourth proportional to 389,799.80, 538,439.97 and 313,605.93 is: 433,191.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,799.80 : 538,439.97 = 313,605.93 : x
  2. Step 2: Convert to fraction form
    389,799.80/538,439.97 = 313,605.93/x
  3. Step 3: Cross multiply
    389,799.80x = 538,439.97 × 313,605.93
  4. Step 4: Simplify right side
    389,799.80x = 168,857,967,541.02
  5. Step 5: Solve for x
    x = 168,857,967,541.02/389,799.80
  6. Step 6: Final answer
    x = 433,191.52

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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.