Home / 686,121.12-1,029,532.32-326,698.56

Finding the Fourth Proportional to 686,121.12, 1,029,532.32 and 326,698.56

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Solution

The fourth proportional to 686,121.12, 1,029,532.32 and 326,698.56 is: 490,214.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,121.12 : 1,029,532.32 = 326,698.56 : x
  2. Step 2: Convert to fraction form
    686,121.12/1,029,532.32 = 326,698.56/x
  3. Step 3: Cross multiply
    686,121.12x = 1,029,532.32 × 326,698.56
  4. Step 4: Simplify right side
    686,121.12x = 336,346,726,417.46
  5. Step 5: Solve for x
    x = 336,346,726,417.46/686,121.12
  6. Step 6: Final answer
    x = 490,214.80

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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.