Home / 772,248.95-1,065,649.79-428,081.57

Finding the Fourth Proportional to 772,248.95, 1,065,649.79 and 428,081.57

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Solution

The fourth proportional to 772,248.95, 1,065,649.79 and 428,081.57 is: 590,722.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,248.95 : 1,065,649.79 = 428,081.57 : x
  2. Step 2: Convert to fraction form
    772,248.95/1,065,649.79 = 428,081.57/x
  3. Step 3: Cross multiply
    772,248.95x = 1,065,649.79 × 428,081.57
  4. Step 4: Simplify right side
    772,248.95x = 456,185,030,915.33
  5. Step 5: Solve for x
    x = 456,185,030,915.33/772,248.95
  6. Step 6: Final answer
    x = 590,722.76

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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.