Home / 696,524.31-961,214.55-390,668.70

Finding the Fourth Proportional to 696,524.31, 961,214.55 and 390,668.70

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Solution

The fourth proportional to 696,524.31, 961,214.55 and 390,668.70 is: 539,128.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,524.31 : 961,214.55 = 390,668.70 : x
  2. Step 2: Convert to fraction form
    696,524.31/961,214.55 = 390,668.70/x
  3. Step 3: Cross multiply
    696,524.31x = 961,214.55 × 390,668.70
  4. Step 4: Simplify right side
    696,524.31x = 375,516,438,669.59
  5. Step 5: Solve for x
    x = 375,516,438,669.59/696,524.31
  6. Step 6: Final answer
    x = 539,128.98

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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.