Home / 847,861.20-1,170,113.55-485,398.74

Finding the Fourth Proportional to 847,861.20, 1,170,113.55 and 485,398.74

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Solution

The fourth proportional to 847,861.20, 1,170,113.55 and 485,398.74 is: 669,887.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,861.20 : 1,170,113.55 = 485,398.74 : x
  2. Step 2: Convert to fraction form
    847,861.20/1,170,113.55 = 485,398.74/x
  3. Step 3: Cross multiply
    847,861.20x = 1,170,113.55 × 485,398.74
  4. Step 4: Simplify right side
    847,861.20x = 567,971,642,826.93
  5. Step 5: Solve for x
    x = 567,971,642,826.93/847,861.20
  6. Step 6: Final answer
    x = 669,887.53

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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.