Home / 627,261.90-865,616.78-340,784.34

Finding the Fourth Proportional to 627,261.90, 865,616.78 and 340,784.34

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Solution

The fourth proportional to 627,261.90, 865,616.78 and 340,784.34 is: 470,279.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,261.90 : 865,616.78 = 340,784.34 : x
  2. Step 2: Convert to fraction form
    627,261.90/865,616.78 = 340,784.34/x
  3. Step 3: Cross multiply
    627,261.90x = 865,616.78 × 340,784.34
  4. Step 4: Simplify right side
    627,261.90x = 294,988,643,065.23
  5. Step 5: Solve for x
    x = 294,988,643,065.23/627,261.90
  6. Step 6: Final answer
    x = 470,279.87

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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.