Home / 790,870.72-1,091,399.93-428,293.46

Finding the Fourth Proportional to 790,870.72, 1,091,399.93 and 428,293.46

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Solution

The fourth proportional to 790,870.72, 1,091,399.93 and 428,293.46 is: 591,044.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,870.72 : 1,091,399.93 = 428,293.46 : x
  2. Step 2: Convert to fraction form
    790,870.72/1,091,399.93 = 428,293.46/x
  3. Step 3: Cross multiply
    790,870.72x = 1,091,399.93 × 428,293.46
  4. Step 4: Simplify right side
    790,870.72x = 467,439,450,121.99
  5. Step 5: Solve for x
    x = 467,439,450,121.99/790,870.72
  6. Step 6: Final answer
    x = 591,044.07

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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.