Home / 419,336.25-578,708.32-315,785.07

Finding the Fourth Proportional to 419,336.25, 578,708.32 and 315,785.07

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Solution

The fourth proportional to 419,336.25, 578,708.32 and 315,785.07 is: 435,801.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,336.25 : 578,708.32 = 315,785.07 : x
  2. Step 2: Convert to fraction form
    419,336.25/578,708.32 = 315,785.07/x
  3. Step 3: Cross multiply
    419,336.25x = 578,708.32 × 315,785.07
  4. Step 4: Simplify right side
    419,336.25x = 182,747,446,551.32
  5. Step 5: Solve for x
    x = 182,747,446,551.32/419,336.25
  6. Step 6: Final answer
    x = 435,801.69

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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.