Home / 611,712.20-917,568.30-442,875.80

Finding the Fourth Proportional to 611,712.20, 917,568.30 and 442,875.80

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Solution

The fourth proportional to 611,712.20, 917,568.30 and 442,875.80 is: 664,313.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,712.20 : 917,568.30 = 442,875.80 : x
  2. Step 2: Convert to fraction form
    611,712.20/917,568.30 = 442,875.80/x
  3. Step 3: Cross multiply
    611,712.20x = 917,568.30 × 442,875.80
  4. Step 4: Simplify right side
    611,712.20x = 406,368,794,917.14
  5. Step 5: Solve for x
    x = 406,368,794,917.14/611,712.20
  6. Step 6: Final answer
    x = 664,313.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.