Home / 708,786.33-978,148.76-386,514.11

Finding the Fourth Proportional to 708,786.33, 978,148.76 and 386,514.11

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Solution

The fourth proportional to 708,786.33, 978,148.76 and 386,514.11 is: 533,402.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,786.33 : 978,148.76 = 386,514.11 : x
  2. Step 2: Convert to fraction form
    708,786.33/978,148.76 = 386,514.11/x
  3. Step 3: Cross multiply
    708,786.33x = 978,148.76 × 386,514.11
  4. Step 4: Simplify right side
    708,786.33x = 378,068,290,595.69
  5. Step 5: Solve for x
    x = 378,068,290,595.69/708,786.33
  6. Step 6: Final answer
    x = 533,402.35

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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.