Home / 515,645.20-772,811.70-248,831.20

Finding the Fourth Proportional to 515,645.20, 772,811.70 and 248,831.20

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Solution

The fourth proportional to 515,645.20, 772,811.70 and 248,831.20 is: 372,930.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,645.20 : 772,811.70 = 248,831.20 : x
  2. Step 2: Convert to fraction form
    515,645.20/772,811.70 = 248,831.20/x
  3. Step 3: Cross multiply
    515,645.20x = 772,811.70 × 248,831.20
  4. Step 4: Simplify right side
    515,645.20x = 192,299,662,685.04
  5. Step 5: Solve for x
    x = 192,299,662,685.04/515,645.20
  6. Step 6: Final answer
    x = 372,930.19

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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.