Home / 738,370.75-1,018,952.04-398,839

Finding the Fourth Proportional to 738,370.75, 1,018,952.04 and 398,839

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Solution

The fourth proportional to 738,370.75, 1,018,952.04 and 398,839 is: 550,398.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,370.75 : 1,018,952.04 = 398,839 : x
  2. Step 2: Convert to fraction form
    738,370.75/1,018,952.04 = 398,839/x
  3. Step 3: Cross multiply
    738,370.75x = 1,018,952.04 × 398,839
  4. Step 4: Simplify right side
    738,370.75x = 406,397,812,681.56
  5. Step 5: Solve for x
    x = 406,397,812,681.56/738,370.75
  6. Step 6: Final answer
    x = 550,398.04

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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.