Home / 787,378,053.15-1,086,590,831.36-434,946,742.11

Finding the Fourth Proportional to 787,378,053.15, 1,086,590,831.36 and 434,946,742.11

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Solution

The fourth proportional to 787,378,053.15, 1,086,590,831.36 and 434,946,742.11 is: 600,231,540.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,378,053.15 : 1,086,590,831.36 = 434,946,742.11 : x
  2. Step 2: Convert to fraction form
    787,378,053.15/1,086,590,831.36 = 434,946,742.11/x
  3. Step 3: Cross multiply
    787,378,053.15x = 1,086,590,831.36 × 434,946,742.11
  4. Step 4: Simplify right side
    787,378,053.15x = 472,609,142,104,453,696
  5. Step 5: Solve for x
    x = 472,609,142,104,453,696/787,378,053.15
  6. Step 6: Final answer
    x = 600,231,540.89

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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.