Home / 772,986.17-1,066,722.15-428,822.09

Finding the Fourth Proportional to 772,986.17, 1,066,722.15 and 428,822.09

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Solution

The fourth proportional to 772,986.17, 1,066,722.15 and 428,822.09 is: 591,775.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,986.17 : 1,066,722.15 = 428,822.09 : x
  2. Step 2: Convert to fraction form
    772,986.17/1,066,722.15 = 428,822.09/x
  3. Step 3: Cross multiply
    772,986.17x = 1,066,722.15 × 428,822.09
  4. Step 4: Simplify right side
    772,986.17x = 457,434,016,478.68
  5. Step 5: Solve for x
    x = 457,434,016,478.68/772,986.17
  6. Step 6: Final answer
    x = 591,775.17

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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.