Home / 772,544.35-1,066,123.96-428,394.80

Finding the Fourth Proportional to 772,544.35, 1,066,123.96 and 428,394.80

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Solution

The fourth proportional to 772,544.35, 1,066,123.96 and 428,394.80 is: 591,191.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,544.35 : 1,066,123.96 = 428,394.80 : x
  2. Step 2: Convert to fraction form
    772,544.35/1,066,123.96 = 428,394.80/x
  3. Step 3: Cross multiply
    772,544.35x = 1,066,123.96 × 428,394.80
  4. Step 4: Simplify right side
    772,544.35x = 456,721,961,022.57
  5. Step 5: Solve for x
    x = 456,721,961,022.57/772,544.35
  6. Step 6: Final answer
    x = 591,191.90

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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.