Home / 672,512.10-1,008,768.15-513,079.80

Finding the Fourth Proportional to 672,512.10, 1,008,768.15 and 513,079.80

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Solution

The fourth proportional to 672,512.10, 1,008,768.15 and 513,079.80 is: 769,619.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,512.10 : 1,008,768.15 = 513,079.80 : x
  2. Step 2: Convert to fraction form
    672,512.10/1,008,768.15 = 513,079.80/x
  3. Step 3: Cross multiply
    672,512.10x = 1,008,768.15 × 513,079.80
  4. Step 4: Simplify right side
    672,512.10x = 517,578,560,648.37
  5. Step 5: Solve for x
    x = 517,578,560,648.37/672,512.10
  6. Step 6: Final answer
    x = 769,619.70

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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.