Home / 687,671.25-1,031,730.99-345,938.28

Finding the Fourth Proportional to 687,671.25, 1,031,730.99 and 345,938.28

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Solution

The fourth proportional to 687,671.25, 1,031,730.99 and 345,938.28 is: 519,020.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,671.25 : 1,031,730.99 = 345,938.28 : x
  2. Step 2: Convert to fraction form
    687,671.25/1,031,730.99 = 345,938.28/x
  3. Step 3: Cross multiply
    687,671.25x = 1,031,730.99 × 345,938.28
  4. Step 4: Simplify right side
    687,671.25x = 356,915,244,103.30
  5. Step 5: Solve for x
    x = 356,915,244,103.30/687,671.25
  6. Step 6: Final answer
    x = 519,020.16

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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.