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Finding the Fourth Proportional to 632,656.20, 948,987.90 and 258,679.20

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Solution

The fourth proportional to 632,656.20, 948,987.90 and 258,679.20 is: 388,020.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,656.20 : 948,987.90 = 258,679.20 : x
  2. Step 2: Convert to fraction form
    632,656.20/948,987.90 = 258,679.20/x
  3. Step 3: Cross multiply
    632,656.20x = 948,987.90 × 258,679.20
  4. Step 4: Simplify right side
    632,656.20x = 245,483,430,781.68
  5. Step 5: Solve for x
    x = 245,483,430,781.68/632,656.20
  6. Step 6: Final answer
    x = 388,020.27

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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.