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Finding the Fourth Proportional to 858,952.90, 1,288,101.30 and 259,714.90

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Solution

The fourth proportional to 858,952.90, 1,288,101.30 and 259,714.90 is: 389,473.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,952.90 : 1,288,101.30 = 259,714.90 : x
  2. Step 2: Convert to fraction form
    858,952.90/1,288,101.30 = 259,714.90/x
  3. Step 3: Cross multiply
    858,952.90x = 1,288,101.30 × 259,714.90
  4. Step 4: Simplify right side
    858,952.90x = 334,539,100,319.37
  5. Step 5: Solve for x
    x = 334,539,100,319.37/858,952.90
  6. Step 6: Final answer
    x = 389,473.16

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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.