Home / 627,401.10-865,818.99-340,921.20

Finding the Fourth Proportional to 627,401.10, 865,818.99 and 340,921.20

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Solution

The fourth proportional to 627,401.10, 865,818.99 and 340,921.20 is: 470,474.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,401.10 : 865,818.99 = 340,921.20 : x
  2. Step 2: Convert to fraction form
    627,401.10/865,818.99 = 340,921.20/x
  3. Step 3: Cross multiply
    627,401.10x = 865,818.99 × 340,921.20
  4. Step 4: Simplify right side
    627,401.10x = 295,176,049,053.59
  5. Step 5: Solve for x
    x = 295,176,049,053.59/627,401.10
  6. Step 6: Final answer
    x = 470,474.23

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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.