Home / 696,679.72-961,341.15-390,693.14

Finding the Fourth Proportional to 696,679.72, 961,341.15 and 390,693.14

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Solution

The fourth proportional to 696,679.72, 961,341.15 and 390,693.14 is: 539,113.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,679.72 : 961,341.15 = 390,693.14 : x
  2. Step 2: Convert to fraction form
    696,679.72/961,341.15 = 390,693.14/x
  3. Step 3: Cross multiply
    696,679.72x = 961,341.15 × 390,693.14
  4. Step 4: Simplify right side
    696,679.72x = 375,589,385,744.54
  5. Step 5: Solve for x
    x = 375,589,385,744.54/696,679.72
  6. Step 6: Final answer
    x = 539,113.42

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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.