Home / 738,160.20-1,018,661.07-398,628.42

Finding the Fourth Proportional to 738,160.20, 1,018,661.07 and 398,628.42

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Solution

The fourth proportional to 738,160.20, 1,018,661.07 and 398,628.42 is: 550,107.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,160.20 : 1,018,661.07 = 398,628.42 : x
  2. Step 2: Convert to fraction form
    738,160.20/1,018,661.07 = 398,628.42/x
  3. Step 3: Cross multiply
    738,160.20x = 1,018,661.07 × 398,628.42
  4. Step 4: Simplify right side
    738,160.20x = 406,067,252,849.61
  5. Step 5: Solve for x
    x = 406,067,252,849.61/738,160.20
  6. Step 6: Final answer
    x = 550,107.22

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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.