Home / 821,177,395-1,132,945,802.21-468,500,025.40

Finding the Fourth Proportional to 821,177,395, 1,132,945,802.21 and 468,500,025.40

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Solution

The fourth proportional to 821,177,395, 1,132,945,802.21 and 468,500,025.40 is: 646,370,857.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,177,395 : 1,132,945,802.21 = 468,500,025.40 : x
  2. Step 2: Convert to fraction form
    821,177,395/1,132,945,802.21 = 468,500,025.40/x
  3. Step 3: Cross multiply
    821,177,395x = 1,132,945,802.21 × 468,500,025.40
  4. Step 4: Simplify right side
    821,177,395x = 530,785,137,112,208,384
  5. Step 5: Solve for x
    x = 530,785,137,112,208,384/821,177,395
  6. Step 6: Final answer
    x = 646,370,857.68

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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.