Home / 1,315,080,502.52-1,814,123,048.42-813,128,831.48

Finding the Fourth Proportional to 1,315,080,502.52, 1,814,123,048.42 and 813,128,831.48

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Solution

The fourth proportional to 1,315,080,502.52, 1,814,123,048.42 and 813,128,831.48 is: 1,121,692,361.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,080,502.52 : 1,814,123,048.42 = 813,128,831.48 : x
  2. Step 2: Convert to fraction form
    1,315,080,502.52/1,814,123,048.42 = 813,128,831.48/x
  3. Step 3: Cross multiply
    1,315,080,502.52x = 1,814,123,048.42 × 813,128,831.48
  4. Step 4: Simplify right side
    1,315,080,502.52x = 1,475,115,754,522,690,048
  5. Step 5: Solve for x
    x = 1,475,115,754,522,690,048/1,315,080,502.52
  6. Step 6: Final answer
    x = 1,121,692,361.57

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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.