Home / 689,998.28-1,034,647.36-315,700.52

Finding the Fourth Proportional to 689,998.28, 1,034,647.36 and 315,700.52

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Solution

The fourth proportional to 689,998.28, 1,034,647.36 and 315,700.52 is: 473,390.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,998.28 : 1,034,647.36 = 315,700.52 : x
  2. Step 2: Convert to fraction form
    689,998.28/1,034,647.36 = 315,700.52/x
  3. Step 3: Cross multiply
    689,998.28x = 1,034,647.36 × 315,700.52
  4. Step 4: Simplify right side
    689,998.28x = 326,638,709,568.63
  5. Step 5: Solve for x
    x = 326,638,709,568.63/689,998.28
  6. Step 6: Final answer
    x = 473,390.61

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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.