Home / 772,987.34-1,066,723.77-428,823.28

Finding the Fourth Proportional to 772,987.34, 1,066,723.77 and 428,823.28

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Solution

The fourth proportional to 772,987.34, 1,066,723.77 and 428,823.28 is: 591,776.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,987.34 : 1,066,723.77 = 428,823.28 : x
  2. Step 2: Convert to fraction form
    772,987.34/1,066,723.77 = 428,823.28/x
  3. Step 3: Cross multiply
    772,987.34x = 1,066,723.77 × 428,823.28
  4. Step 4: Simplify right side
    772,987.34x = 457,435,984,846.64
  5. Step 5: Solve for x
    x = 457,435,984,846.64/772,987.34
  6. Step 6: Final answer
    x = 591,776.82

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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.