Home / 772,557.99-1,066,132.40-428,418.15

Finding the Fourth Proportional to 772,557.99, 1,066,132.40 and 428,418.15

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Solution

The fourth proportional to 772,557.99, 1,066,132.40 and 428,418.15 is: 591,218.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,557.99 : 1,066,132.40 = 428,418.15 : x
  2. Step 2: Convert to fraction form
    772,557.99/1,066,132.40 = 428,418.15/x
  3. Step 3: Cross multiply
    772,557.99x = 1,066,132.40 × 428,418.15
  4. Step 4: Simplify right side
    772,557.99x = 456,750,468,320.97
  5. Step 5: Solve for x
    x = 456,750,468,320.97/772,557.99
  6. Step 6: Final answer
    x = 591,218.36

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Double scale
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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.