Home / 418,982.60-578,196.12-227,991.88

Finding the Fourth Proportional to 418,982.60, 578,196.12 and 227,991.88

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Solution

The fourth proportional to 418,982.60, 578,196.12 and 227,991.88 is: 314,628.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,982.60 : 578,196.12 = 227,991.88 : x
  2. Step 2: Convert to fraction form
    418,982.60/578,196.12 = 227,991.88/x
  3. Step 3: Cross multiply
    418,982.60x = 578,196.12 × 227,991.88
  4. Step 4: Simplify right side
    418,982.60x = 131,824,020,407.51
  5. Step 5: Solve for x
    x = 131,824,020,407.51/418,982.60
  6. Step 6: Final answer
    x = 314,628.87

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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.