Home / 738,443.13-1,019,052.43-398,911.38

Finding the Fourth Proportional to 738,443.13, 1,019,052.43 and 398,911.38

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Solution

The fourth proportional to 738,443.13, 1,019,052.43 and 398,911.38 is: 550,498.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,443.13 : 1,019,052.43 = 398,911.38 : x
  2. Step 2: Convert to fraction form
    738,443.13/1,019,052.43 = 398,911.38/x
  3. Step 3: Cross multiply
    738,443.13x = 1,019,052.43 × 398,911.38
  4. Step 4: Simplify right side
    738,443.13x = 406,511,610,146.38
  5. Step 5: Solve for x
    x = 406,511,610,146.38/738,443.13
  6. Step 6: Final answer
    x = 550,498.19

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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.