Home / 790,780.49-1,091,282.28-428,204.39

Finding the Fourth Proportional to 790,780.49, 1,091,282.28 and 428,204.39

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Solution

The fourth proportional to 790,780.49, 1,091,282.28 and 428,204.39 is: 590,924.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,780.49 : 1,091,282.28 = 428,204.39 : x
  2. Step 2: Convert to fraction form
    790,780.49/1,091,282.28 = 428,204.39/x
  3. Step 3: Cross multiply
    790,780.49x = 1,091,282.28 × 428,204.39
  4. Step 4: Simplify right side
    790,780.49x = 467,291,855,427.78
  5. Step 5: Solve for x
    x = 467,291,855,427.78/790,780.49
  6. Step 6: Final answer
    x = 590,924.87

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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.