Home / 455,031.20-627,943.05-253,827.20

Finding the Fourth Proportional to 455,031.20, 627,943.05 and 253,827.20

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Solution

The fourth proportional to 455,031.20, 627,943.05 and 253,827.20 is: 350,281.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,031.20 : 627,943.05 = 253,827.20 : x
  2. Step 2: Convert to fraction form
    455,031.20/627,943.05 = 253,827.20/x
  3. Step 3: Cross multiply
    455,031.20x = 627,943.05 × 253,827.20
  4. Step 4: Simplify right side
    455,031.20x = 159,389,023,001.25
  5. Step 5: Solve for x
    x = 159,389,023,001.25/455,031.20
  6. Step 6: Final answer
    x = 350,281.53

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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.