Home / 810,997.80-1,216,681.44-431,718.66

Finding the Fourth Proportional to 810,997.80, 1,216,681.44 and 431,718.66

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Solution

The fourth proportional to 810,997.80, 1,216,681.44 and 431,718.66 is: 647,676.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,997.80 : 1,216,681.44 = 431,718.66 : x
  2. Step 2: Convert to fraction form
    810,997.80/1,216,681.44 = 431,718.66/x
  3. Step 3: Cross multiply
    810,997.80x = 1,216,681.44 × 431,718.66
  4. Step 4: Simplify right side
    810,997.80x = 525,264,080,923.67
  5. Step 5: Solve for x
    x = 525,264,080,923.67/810,997.80
  6. Step 6: Final answer
    x = 647,676.33

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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.