Home / 419,404.16-578,784.34-228,417.40

Finding the Fourth Proportional to 419,404.16, 578,784.34 and 228,417.40

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Solution

The fourth proportional to 419,404.16, 578,784.34 and 228,417.40 is: 315,219.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,404.16 : 578,784.34 = 228,417.40 : x
  2. Step 2: Convert to fraction form
    419,404.16/578,784.34 = 228,417.40/x
  3. Step 3: Cross multiply
    419,404.16x = 578,784.34 × 228,417.40
  4. Step 4: Simplify right side
    419,404.16x = 132,204,415,112.52
  5. Step 5: Solve for x
    x = 132,204,415,112.52/419,404.16
  6. Step 6: Final answer
    x = 315,219.61

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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.