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Finding the Fourth Proportional to 696,700.62, 961,484.88 and 390,873.84

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Solution

The fourth proportional to 696,700.62, 961,484.88 and 390,873.84 is: 539,427.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,700.62 : 961,484.88 = 390,873.84 : x
  2. Step 2: Convert to fraction form
    696,700.62/961,484.88 = 390,873.84/x
  3. Step 3: Cross multiply
    696,700.62x = 961,484.88 × 390,873.84
  4. Step 4: Simplify right side
    696,700.62x = 375,819,287,147.54
  5. Step 5: Solve for x
    x = 375,819,287,147.54/696,700.62
  6. Step 6: Final answer
    x = 539,427.23

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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.