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Finding the Fourth Proportional to 696,717.12, 961,465.12 and 378,765.12

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Solution

The fourth proportional to 696,717.12, 961,465.12 and 378,765.12 is: 522,693.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,717.12 : 961,465.12 = 378,765.12 : x
  2. Step 2: Convert to fraction form
    696,717.12/961,465.12 = 378,765.12/x
  3. Step 3: Cross multiply
    696,717.12x = 961,465.12 × 378,765.12
  4. Step 4: Simplify right side
    696,717.12x = 364,169,451,552.61
  5. Step 5: Solve for x
    x = 364,169,451,552.61/696,717.12
  6. Step 6: Final answer
    x = 522,693.42

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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.