Home / 419,404.04-578,784.16-228,417.28

Finding the Fourth Proportional to 419,404.04, 578,784.16 and 228,417.28

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Solution

The fourth proportional to 419,404.04, 578,784.16 and 228,417.28 is: 315,219.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,404.04 : 578,784.16 = 228,417.28 : x
  2. Step 2: Convert to fraction form
    419,404.04/578,784.16 = 228,417.28/x
  3. Step 3: Cross multiply
    419,404.04x = 578,784.16 × 228,417.28
  4. Step 4: Simplify right side
    419,404.04x = 132,204,303,534.29
  5. Step 5: Solve for x
    x = 132,204,303,534.29/419,404.04
  6. Step 6: Final answer
    x = 315,219.43

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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.