Home / 772,494.77-1,066,023.69-428,332.05

Finding the Fourth Proportional to 772,494.77, 1,066,023.69 and 428,332.05

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Solution

The fourth proportional to 772,494.77, 1,066,023.69 and 428,332.05 is: 591,087.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,494.77 : 1,066,023.69 = 428,332.05 : x
  2. Step 2: Convert to fraction form
    772,494.77/1,066,023.69 = 428,332.05/x
  3. Step 3: Cross multiply
    772,494.77x = 1,066,023.69 × 428,332.05
  4. Step 4: Simplify right side
    772,494.77x = 456,612,110,880.02
  5. Step 5: Solve for x
    x = 456,612,110,880.02/772,494.77
  6. Step 6: Final answer
    x = 591,087.64

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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.