Home / 686,705.78-1,030,515.72-282,229.70

Finding the Fourth Proportional to 686,705.78, 1,030,515.72 and 282,229.70

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Solution

The fourth proportional to 686,705.78, 1,030,515.72 and 282,229.70 is: 423,532.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,705.78 : 1,030,515.72 = 282,229.70 : x
  2. Step 2: Convert to fraction form
    686,705.78/1,030,515.72 = 282,229.70/x
  3. Step 3: Cross multiply
    686,705.78x = 1,030,515.72 × 282,229.70
  4. Step 4: Simplify right side
    686,705.78x = 290,842,142,500.88
  5. Step 5: Solve for x
    x = 290,842,142,500.88/686,705.78
  6. Step 6: Final answer
    x = 423,532.39

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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.