Home / 790,636.61-1,091,065.31-428,057.53

Finding the Fourth Proportional to 790,636.61, 1,091,065.31 and 428,057.53

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Solution

The fourth proportional to 790,636.61, 1,091,065.31 and 428,057.53 is: 590,712.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,636.61 : 1,091,065.31 = 428,057.53 : x
  2. Step 2: Convert to fraction form
    790,636.61/1,091,065.31 = 428,057.53/x
  3. Step 3: Cross multiply
    790,636.61x = 1,091,065.31 × 428,057.53
  4. Step 4: Simplify right side
    790,636.61x = 467,038,718,404.55
  5. Step 5: Solve for x
    x = 467,038,718,404.55/790,636.61
  6. Step 6: Final answer
    x = 590,712.23

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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.