Home / 772,735.07-1,066,358.51-428,515.45

Finding the Fourth Proportional to 772,735.07, 1,066,358.51 and 428,515.45

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Solution

The fourth proportional to 772,735.07, 1,066,358.51 and 428,515.45 is: 591,342.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,735.07 : 1,066,358.51 = 428,515.45 : x
  2. Step 2: Convert to fraction form
    772,735.07/1,066,358.51 = 428,515.45/x
  3. Step 3: Cross multiply
    772,735.07x = 1,066,358.51 × 428,515.45
  4. Step 4: Simplify right side
    772,735.07x = 456,951,093,036.80
  5. Step 5: Solve for x
    x = 456,951,093,036.80/772,735.07
  6. Step 6: Final answer
    x = 591,342.51

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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.