Home / 1,214,117,128.56-1,821,053,129.13-823,154,253.18

Finding the Fourth Proportional to 1,214,117,128.56, 1,821,053,129.13 and 823,154,253.18

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Solution

The fourth proportional to 1,214,117,128.56, 1,821,053,129.13 and 823,154,253.18 is: 1,234,648,283.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214,117,128.56 : 1,821,053,129.13 = 823,154,253.18 : x
  2. Step 2: Convert to fraction form
    1,214,117,128.56/1,821,053,129.13 = 823,154,253.18/x
  3. Step 3: Cross multiply
    1,214,117,128.56x = 1,821,053,129.13 × 823,154,253.18
  4. Step 4: Simplify right side
    1,214,117,128.56x = 1,499,007,628,510,107,136
  5. Step 5: Solve for x
    x = 1,499,007,628,510,107,136/1,214,117,128.56
  6. Step 6: Final answer
    x = 1,234,648,283.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.