Home / 769,514.40-1,154,271.60-486,079.20

Finding the Fourth Proportional to 769,514.40, 1,154,271.60 and 486,079.20

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Solution

The fourth proportional to 769,514.40, 1,154,271.60 and 486,079.20 is: 729,118.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,514.40 : 1,154,271.60 = 486,079.20 : x
  2. Step 2: Convert to fraction form
    769,514.40/1,154,271.60 = 486,079.20/x
  3. Step 3: Cross multiply
    769,514.40x = 1,154,271.60 × 486,079.20
  4. Step 4: Simplify right side
    769,514.40x = 561,067,415,910.72
  5. Step 5: Solve for x
    x = 561,067,415,910.72/769,514.40
  6. Step 6: Final answer
    x = 729,118.80

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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.