Home / 1,185,831.36-1,636,439.83-641,963.21

Finding the Fourth Proportional to 1,185,831.36, 1,636,439.83 and 641,963.21

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Solution

The fourth proportional to 1,185,831.36, 1,636,439.83 and 641,963.21 is: 885,905.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,831.36 : 1,636,439.83 = 641,963.21 : x
  2. Step 2: Convert to fraction form
    1,185,831.36/1,636,439.83 = 641,963.21/x
  3. Step 3: Cross multiply
    1,185,831.36x = 1,636,439.83 × 641,963.21
  4. Step 4: Simplify right side
    1,185,831.36x = 1,050,534,156,451.55
  5. Step 5: Solve for x
    x = 1,050,534,156,451.55/1,185,831.36
  6. Step 6: Final answer
    x = 885,905.19

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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.