Home / 690,752.45-1,036,268.80-217,327.70

Finding the Fourth Proportional to 690,752.45, 1,036,268.80 and 217,327.70

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Solution

The fourth proportional to 690,752.45, 1,036,268.80 and 217,327.70 is: 326,035.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,752.45 : 1,036,268.80 = 217,327.70 : x
  2. Step 2: Convert to fraction form
    690,752.45/1,036,268.80 = 217,327.70/x
  3. Step 3: Cross multiply
    690,752.45x = 1,036,268.80 × 217,327.70
  4. Step 4: Simplify right side
    690,752.45x = 225,209,914,885.76
  5. Step 5: Solve for x
    x = 225,209,914,885.76/690,752.45
  6. Step 6: Final answer
    x = 326,035.64

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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.