Home / 418,985.80-578,205.78-228,004.36

Finding the Fourth Proportional to 418,985.80, 578,205.78 and 228,004.36

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Solution

The fourth proportional to 418,985.80, 578,205.78 and 228,004.36 is: 314,648.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,985.80 : 578,205.78 = 228,004.36 : x
  2. Step 2: Convert to fraction form
    418,985.80/578,205.78 = 228,004.36/x
  3. Step 3: Cross multiply
    418,985.80x = 578,205.78 × 228,004.36
  4. Step 4: Simplify right side
    418,985.80x = 131,833,438,817.20
  5. Step 5: Solve for x
    x = 131,833,438,817.20/418,985.80
  6. Step 6: Final answer
    x = 314,648.94

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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.