Home / 790,780.80-1,091,278.08-428,207.52

Finding the Fourth Proportional to 790,780.80, 1,091,278.08 and 428,207.52

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Solution

The fourth proportional to 790,780.80, 1,091,278.08 and 428,207.52 is: 590,926.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,780.80 : 1,091,278.08 = 428,207.52 : x
  2. Step 2: Convert to fraction form
    790,780.80/1,091,278.08 = 428,207.52/x
  3. Step 3: Cross multiply
    790,780.80x = 1,091,278.08 × 428,207.52
  4. Step 4: Simplify right side
    790,780.80x = 467,293,480,267.16
  5. Step 5: Solve for x
    x = 467,293,480,267.16/790,780.80
  6. Step 6: Final answer
    x = 590,926.69

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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.