Home / 689,593.55-1,034,379.95-310,246.40

Finding the Fourth Proportional to 689,593.55, 1,034,379.95 and 310,246.40

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Solution

The fourth proportional to 689,593.55, 1,034,379.95 and 310,246.40 is: 465,364.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,593.55 : 1,034,379.95 = 310,246.40 : x
  2. Step 2: Convert to fraction form
    689,593.55/1,034,379.95 = 310,246.40/x
  3. Step 3: Cross multiply
    689,593.55x = 1,034,379.95 × 310,246.40
  4. Step 4: Simplify right side
    689,593.55x = 320,912,656,754.40
  5. Step 5: Solve for x
    x = 320,912,656,754.40/689,593.55
  6. Step 6: Final answer
    x = 465,364.93

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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.