Home / 689,875-1,034,979.10-216,560.36

Finding the Fourth Proportional to 689,875, 1,034,979.10 and 216,560.36

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Solution

The fourth proportional to 689,875, 1,034,979.10 and 216,560.36 is: 324,892.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,875 : 1,034,979.10 = 216,560.36 : x
  2. Step 2: Convert to fraction form
    689,875/1,034,979.10 = 216,560.36/x
  3. Step 3: Cross multiply
    689,875x = 1,034,979.10 × 216,560.36
  4. Step 4: Simplify right side
    689,875x = 224,135,446,488.48
  5. Step 5: Solve for x
    x = 224,135,446,488.48/689,875
  6. Step 6: Final answer
    x = 324,892.84

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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.