Home / 820,749.06-1,231,062.12-288,274.77

Finding the Fourth Proportional to 820,749.06, 1,231,062.12 and 288,274.77

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Solution

The fourth proportional to 820,749.06, 1,231,062.12 and 288,274.77 is: 432,390.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,749.06 : 1,231,062.12 = 288,274.77 : x
  2. Step 2: Convert to fraction form
    820,749.06/1,231,062.12 = 288,274.77/x
  3. Step 3: Cross multiply
    820,749.06x = 1,231,062.12 × 288,274.77
  4. Step 4: Simplify right side
    820,749.06x = 354,884,149,498.71
  5. Step 5: Solve for x
    x = 354,884,149,498.71/820,749.06
  6. Step 6: Final answer
    x = 432,390.56

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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.