Home / 772,493.49-1,066,053.78-428,343.93

Finding the Fourth Proportional to 772,493.49, 1,066,053.78 and 428,343.93

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Solution

The fourth proportional to 772,493.49, 1,066,053.78 and 428,343.93 is: 591,121.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,493.49 : 1,066,053.78 = 428,343.93 : x
  2. Step 2: Convert to fraction form
    772,493.49/1,066,053.78 = 428,343.93/x
  3. Step 3: Cross multiply
    772,493.49x = 1,066,053.78 × 428,343.93
  4. Step 4: Simplify right side
    772,493.49x = 456,637,665,716.56
  5. Step 5: Solve for x
    x = 456,637,665,716.56/772,493.49
  6. Step 6: Final answer
    x = 591,121.70

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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.