Home / 920,176.86-1,269,819.30-512,278.74

Finding the Fourth Proportional to 920,176.86, 1,269,819.30 and 512,278.74

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Solution

The fourth proportional to 920,176.86, 1,269,819.30 and 512,278.74 is: 706,930.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,176.86 : 1,269,819.30 = 512,278.74 : x
  2. Step 2: Convert to fraction form
    920,176.86/1,269,819.30 = 512,278.74/x
  3. Step 3: Cross multiply
    920,176.86x = 1,269,819.30 × 512,278.74
  4. Step 4: Simplify right side
    920,176.86x = 650,501,431,031.68
  5. Step 5: Solve for x
    x = 650,501,431,031.68/920,176.86
  6. Step 6: Final answer
    x = 706,930.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.