Home / 738,153.17-1,018,651.38-398,621.42

Finding the Fourth Proportional to 738,153.17, 1,018,651.38 and 398,621.42

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Solution

The fourth proportional to 738,153.17, 1,018,651.38 and 398,621.42 is: 550,097.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,153.17 : 1,018,651.38 = 398,621.42 : x
  2. Step 2: Convert to fraction form
    738,153.17/1,018,651.38 = 398,621.42/x
  3. Step 3: Cross multiply
    738,153.17x = 1,018,651.38 × 398,621.42
  4. Step 4: Simplify right side
    738,153.17x = 406,056,259,580.56
  5. Step 5: Solve for x
    x = 406,056,259,580.56/738,153.17
  6. Step 6: Final answer
    x = 550,097.56

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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.