Home / 772,393.87-1,065,937.28-428,207.89

Finding the Fourth Proportional to 772,393.87, 1,065,937.28 and 428,207.89

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Solution

The fourth proportional to 772,393.87, 1,065,937.28 and 428,207.89 is: 590,945.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,393.87 : 1,065,937.28 = 428,207.89 : x
  2. Step 2: Convert to fraction form
    772,393.87/1,065,937.28 = 428,207.89/x
  3. Step 3: Cross multiply
    772,393.87x = 1,065,937.28 × 428,207.89
  4. Step 4: Simplify right side
    772,393.87x = 456,442,753,541.14
  5. Step 5: Solve for x
    x = 456,442,753,541.14/772,393.87
  6. Step 6: Final answer
    x = 590,945.59

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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.