Home / 639,828.80-960,074.40-261,027.20

Finding the Fourth Proportional to 639,828.80, 960,074.40 and 261,027.20

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Solution

The fourth proportional to 639,828.80, 960,074.40 and 261,027.20 is: 391,675.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,828.80 : 960,074.40 = 261,027.20 : x
  2. Step 2: Convert to fraction form
    639,828.80/960,074.40 = 261,027.20/x
  3. Step 3: Cross multiply
    639,828.80x = 960,074.40 × 261,027.20
  4. Step 4: Simplify right side
    639,828.80x = 250,605,532,423.68
  5. Step 5: Solve for x
    x = 250,605,532,423.68/639,828.80
  6. Step 6: Final answer
    x = 391,675.92

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1.5x scale

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.