Home / 790,869.72-1,091,398.55-428,292.46

Finding the Fourth Proportional to 790,869.72, 1,091,398.55 and 428,292.46

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Solution

The fourth proportional to 790,869.72, 1,091,398.55 and 428,292.46 is: 591,042.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,869.72 : 1,091,398.55 = 428,292.46 : x
  2. Step 2: Convert to fraction form
    790,869.72/1,091,398.55 = 428,292.46/x
  3. Step 3: Cross multiply
    790,869.72x = 1,091,398.55 × 428,292.46
  4. Step 4: Simplify right side
    790,869.72x = 467,437,766,020.71
  5. Step 5: Solve for x
    x = 467,437,766,020.71/790,869.72
  6. Step 6: Final answer
    x = 591,042.69

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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.