Home / 409,787,521.79-565,508,472.19-221,615,811.57

Finding the Fourth Proportional to 409,787,521.79, 565,508,472.19 and 221,615,811.57

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Solution

The fourth proportional to 409,787,521.79, 565,508,472.19 and 221,615,811.57 is: 305,830,735.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,787,521.79 : 565,508,472.19 = 221,615,811.57 : x
  2. Step 2: Convert to fraction form
    409,787,521.79/565,508,472.19 = 221,615,811.57/x
  3. Step 3: Cross multiply
    409,787,521.79x = 565,508,472.19 × 221,615,811.57
  4. Step 4: Simplify right side
    409,787,521.79x = 125,325,619,014,097,632
  5. Step 5: Solve for x
    x = 125,325,619,014,097,632/409,787,521.79
  6. Step 6: Final answer
    x = 305,830,735.08

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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.