Home / 313,811.52-472,424.73-285,910.80

Finding the Fourth Proportional to 313,811.52, 472,424.73 and 285,910.80

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Solution

The fourth proportional to 313,811.52, 472,424.73 and 285,910.80 is: 430,421.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,811.52 : 472,424.73 = 285,910.80 : x
  2. Step 2: Convert to fraction form
    313,811.52/472,424.73 = 285,910.80/x
  3. Step 3: Cross multiply
    313,811.52x = 472,424.73 × 285,910.80
  4. Step 4: Simplify right side
    313,811.52x = 135,071,332,494.08
  5. Step 5: Solve for x
    x = 135,071,332,494.08/313,811.52
  6. Step 6: Final answer
    x = 430,421.84

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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.