Home / 690,756.45-1,036,274.80-217,331.70

Finding the Fourth Proportional to 690,756.45, 1,036,274.80 and 217,331.70

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Solution

The fourth proportional to 690,756.45, 1,036,274.80 and 217,331.70 is: 326,041.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,756.45 : 1,036,274.80 = 217,331.70 : x
  2. Step 2: Convert to fraction form
    690,756.45/1,036,274.80 = 217,331.70/x
  3. Step 3: Cross multiply
    690,756.45x = 1,036,274.80 × 217,331.70
  4. Step 4: Simplify right side
    690,756.45x = 225,215,363,951.16
  5. Step 5: Solve for x
    x = 225,215,363,951.16/690,756.45
  6. Step 6: Final answer
    x = 326,041.64

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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.