Home / 1,291,565.72-1,937,643.42-393,134.78

Finding the Fourth Proportional to 1,291,565.72, 1,937,643.42 and 393,134.78

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Solution

The fourth proportional to 1,291,565.72, 1,937,643.42 and 393,134.78 is: 589,791.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,565.72 : 1,937,643.42 = 393,134.78 : x
  2. Step 2: Convert to fraction form
    1,291,565.72/1,937,643.42 = 393,134.78/x
  3. Step 3: Cross multiply
    1,291,565.72x = 1,937,643.42 × 393,134.78
  4. Step 4: Simplify right side
    1,291,565.72x = 761,755,019,640.15
  5. Step 5: Solve for x
    x = 761,755,019,640.15/1,291,565.72
  6. Step 6: Final answer
    x = 589,791.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.