Home / 1,291,532.72-1,937,593.92-393,101.78

Finding the Fourth Proportional to 1,291,532.72, 1,937,593.92 and 393,101.78

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Solution

The fourth proportional to 1,291,532.72, 1,937,593.92 and 393,101.78 is: 589,742.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,532.72 : 1,937,593.92 = 393,101.78 : x
  2. Step 2: Convert to fraction form
    1,291,532.72/1,937,593.92 = 393,101.78/x
  3. Step 3: Cross multiply
    1,291,532.72x = 1,937,593.92 × 393,101.78
  4. Step 4: Simplify right side
    1,291,532.72x = 761,671,618,869.18
  5. Step 5: Solve for x
    x = 761,671,618,869.18/1,291,532.72
  6. Step 6: Final answer
    x = 589,742.41

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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.