Home / 690,423.52-1,035,679.92-217,127.20

Finding the Fourth Proportional to 690,423.52, 1,035,679.92 and 217,127.20

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Solution

The fourth proportional to 690,423.52, 1,035,679.92 and 217,127.20 is: 325,704.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,423.52 : 1,035,679.92 = 217,127.20 : x
  2. Step 2: Convert to fraction form
    690,423.52/1,035,679.92 = 217,127.20/x
  3. Step 3: Cross multiply
    690,423.52x = 1,035,679.92 × 217,127.20
  4. Step 4: Simplify right side
    690,423.52x = 224,874,281,125.82
  5. Step 5: Solve for x
    x = 224,874,281,125.82/690,423.52
  6. Step 6: Final answer
    x = 325,704.84

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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.