Home / 619,121.19-928,681.98-408,709.92

Finding the Fourth Proportional to 619,121.19, 928,681.98 and 408,709.92

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Solution

The fourth proportional to 619,121.19, 928,681.98 and 408,709.92 is: 613,065.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,121.19 : 928,681.98 = 408,709.92 : x
  2. Step 2: Convert to fraction form
    619,121.19/928,681.98 = 408,709.92/x
  3. Step 3: Cross multiply
    619,121.19x = 928,681.98 × 408,709.92
  4. Step 4: Simplify right side
    619,121.19x = 379,561,533,107.83
  5. Step 5: Solve for x
    x = 379,561,533,107.83/619,121.19
  6. Step 6: Final answer
    x = 613,065.01

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1.5x scale

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.