Home / 753,907.40-1,040,400.28-409,743.38

Finding the Fourth Proportional to 753,907.40, 1,040,400.28 and 409,743.38

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Solution

The fourth proportional to 753,907.40, 1,040,400.28 and 409,743.38 is: 565,450.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,907.40 : 1,040,400.28 = 409,743.38 : x
  2. Step 2: Convert to fraction form
    753,907.40/1,040,400.28 = 409,743.38/x
  3. Step 3: Cross multiply
    753,907.40x = 1,040,400.28 × 409,743.38
  4. Step 4: Simplify right side
    753,907.40x = 426,297,127,280.15
  5. Step 5: Solve for x
    x = 426,297,127,280.15/753,907.40
  6. Step 6: Final answer
    x = 565,450.25

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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.