Home / 691,769.60-954,479.28-419,831.36

Finding the Fourth Proportional to 691,769.60, 954,479.28 and 419,831.36

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Solution

The fourth proportional to 691,769.60, 954,479.28 and 419,831.36 is: 579,268.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,769.60 : 954,479.28 = 419,831.36 : x
  2. Step 2: Convert to fraction form
    691,769.60/954,479.28 = 419,831.36/x
  3. Step 3: Cross multiply
    691,769.60x = 954,479.28 × 419,831.36
  4. Step 4: Simplify right side
    691,769.60x = 400,720,334,214.22
  5. Step 5: Solve for x
    x = 400,720,334,214.22/691,769.60
  6. Step 6: Final answer
    x = 579,268.49

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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.