Home / 691,822.40-954,605.12-389,958.08

Finding the Fourth Proportional to 691,822.40, 954,605.12 and 389,958.08

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Solution

The fourth proportional to 691,822.40, 954,605.12 and 389,958.08 is: 538,080.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,822.40 : 954,605.12 = 389,958.08 : x
  2. Step 2: Convert to fraction form
    691,822.40/954,605.12 = 389,958.08/x
  3. Step 3: Cross multiply
    691,822.40x = 954,605.12 × 389,958.08
  4. Step 4: Simplify right side
    691,822.40x = 372,255,979,753.37
  5. Step 5: Solve for x
    x = 372,255,979,753.37/691,822.40
  6. Step 6: Final answer
    x = 538,080.26

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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.