Home / 790,636.86-1,091,065.65-428,057.78

Finding the Fourth Proportional to 790,636.86, 1,091,065.65 and 428,057.78

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Solution

The fourth proportional to 790,636.86, 1,091,065.65 and 428,057.78 is: 590,712.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,636.86 : 1,091,065.65 = 428,057.78 : x
  2. Step 2: Convert to fraction form
    790,636.86/1,091,065.65 = 428,057.78/x
  3. Step 3: Cross multiply
    790,636.86x = 1,091,065.65 × 428,057.78
  4. Step 4: Simplify right side
    790,636.86x = 467,039,138,315.74
  5. Step 5: Solve for x
    x = 467,039,138,315.74/790,636.86
  6. Step 6: Final answer
    x = 590,712.58

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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.