Home / 690,754.45-1,036,271.80-217,329.70

Finding the Fourth Proportional to 690,754.45, 1,036,271.80 and 217,329.70

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Solution

The fourth proportional to 690,754.45, 1,036,271.80 and 217,329.70 is: 326,038.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,754.45 : 1,036,271.80 = 217,329.70 : x
  2. Step 2: Convert to fraction form
    690,754.45/1,036,271.80 = 217,329.70/x
  3. Step 3: Cross multiply
    690,754.45x = 1,036,271.80 × 217,329.70
  4. Step 4: Simplify right side
    690,754.45x = 225,212,639,412.46
  5. Step 5: Solve for x
    x = 225,212,639,412.46/690,754.45
  6. Step 6: Final answer
    x = 326,038.64

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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.