Home / 412,169.18-621,432.32-409,610.40

Finding the Fourth Proportional to 412,169.18, 621,432.32 and 409,610.40

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Solution

The fourth proportional to 412,169.18, 621,432.32 and 409,610.40 is: 617,574.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,169.18 : 621,432.32 = 409,610.40 : x
  2. Step 2: Convert to fraction form
    412,169.18/621,432.32 = 409,610.40/x
  3. Step 3: Cross multiply
    412,169.18x = 621,432.32 × 409,610.40
  4. Step 4: Simplify right side
    412,169.18x = 254,545,141,168.13
  5. Step 5: Solve for x
    x = 254,545,141,168.13/412,169.18
  6. Step 6: Final answer
    x = 617,574.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.