Home / 627,200.96-865,538.07-340,721

Finding the Fourth Proportional to 627,200.96, 865,538.07 and 340,721

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Solution

The fourth proportional to 627,200.96, 865,538.07 and 340,721 is: 470,195.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,200.96 : 865,538.07 = 340,721 : x
  2. Step 2: Convert to fraction form
    627,200.96/865,538.07 = 340,721/x
  3. Step 3: Cross multiply
    627,200.96x = 865,538.07 × 340,721
  4. Step 4: Simplify right side
    627,200.96x = 294,906,996,748.47
  5. Step 5: Solve for x
    x = 294,906,996,748.47/627,200.96
  6. Step 6: Final answer
    x = 470,195.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.