Home / 625,426.36-863,131.56-380,506.68

Finding the Fourth Proportional to 625,426.36, 863,131.56 and 380,506.68

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Solution

The fourth proportional to 625,426.36, 863,131.56 and 380,506.68 is: 525,125.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,426.36 : 863,131.56 = 380,506.68 : x
  2. Step 2: Convert to fraction form
    625,426.36/863,131.56 = 380,506.68/x
  3. Step 3: Cross multiply
    625,426.36x = 863,131.56 × 380,506.68
  4. Step 4: Simplify right side
    625,426.36x = 328,427,324,298.82
  5. Step 5: Solve for x
    x = 328,427,324,298.82/625,426.36
  6. Step 6: Final answer
    x = 525,125.49

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1.5x scale

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.