Home / 638,766.83-881,275.60-409,450.55

Finding the Fourth Proportional to 638,766.83, 881,275.60 and 409,450.55

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Solution

The fourth proportional to 638,766.83, 881,275.60 and 409,450.55 is: 564,899.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,766.83 : 881,275.60 = 409,450.55 : x
  2. Step 2: Convert to fraction form
    638,766.83/881,275.60 = 409,450.55/x
  3. Step 3: Cross multiply
    638,766.83x = 881,275.60 × 409,450.55
  4. Step 4: Simplify right side
    638,766.83x = 360,838,783,814.36
  5. Step 5: Solve for x
    x = 360,838,783,814.36/638,766.83
  6. Step 6: Final answer
    x = 564,899.07

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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.