Home / 689,479.20-1,034,218.80-512,332.20

Finding the Fourth Proportional to 689,479.20, 1,034,218.80 and 512,332.20

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Solution

The fourth proportional to 689,479.20, 1,034,218.80 and 512,332.20 is: 768,498.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,479.20 : 1,034,218.80 = 512,332.20 : x
  2. Step 2: Convert to fraction form
    689,479.20/1,034,218.80 = 512,332.20/x
  3. Step 3: Cross multiply
    689,479.20x = 1,034,218.80 × 512,332.20
  4. Step 4: Simplify right side
    689,479.20x = 529,863,593,085.36
  5. Step 5: Solve for x
    x = 529,863,593,085.36/689,479.20
  6. Step 6: Final answer
    x = 768,498.30

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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.