Home / 772,342.68-1,065,895.80-428,286.46

Finding the Fourth Proportional to 772,342.68, 1,065,895.80 and 428,286.46

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Solution

The fourth proportional to 772,342.68, 1,065,895.80 and 428,286.46 is: 591,070.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,342.68 : 1,065,895.80 = 428,286.46 : x
  2. Step 2: Convert to fraction form
    772,342.68/1,065,895.80 = 428,286.46/x
  3. Step 3: Cross multiply
    772,342.68x = 1,065,895.80 × 428,286.46
  4. Step 4: Simplify right side
    772,342.68x = 456,508,736,769.44
  5. Step 5: Solve for x
    x = 456,508,736,769.44/772,342.68
  6. Step 6: Final answer
    x = 591,070.19

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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.