Home / 724,882.30-1,087,323.45-689,890.30

Finding the Fourth Proportional to 724,882.30, 1,087,323.45 and 689,890.30

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Solution

The fourth proportional to 724,882.30, 1,087,323.45 and 689,890.30 is: 1,034,835.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,882.30 : 1,087,323.45 = 689,890.30 : x
  2. Step 2: Convert to fraction form
    724,882.30/1,087,323.45 = 689,890.30/x
  3. Step 3: Cross multiply
    724,882.30x = 1,087,323.45 × 689,890.30
  4. Step 4: Simplify right side
    724,882.30x = 750,133,901,117.54
  5. Step 5: Solve for x
    x = 750,133,901,117.54/724,882.30
  6. Step 6: Final answer
    x = 1,034,835.45

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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.