Home / 1,231,389,781.65-1,699,296,896.07-666,870,076.20

Finding the Fourth Proportional to 1,231,389,781.65, 1,699,296,896.07 and 666,870,076.20

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Solution

The fourth proportional to 1,231,389,781.65, 1,699,296,896.07 and 666,870,076.20 is: 920,269,331.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,389,781.65 : 1,699,296,896.07 = 666,870,076.20 : x
  2. Step 2: Convert to fraction form
    1,231,389,781.65/1,699,296,896.07 = 666,870,076.20/x
  3. Step 3: Cross multiply
    1,231,389,781.65x = 1,699,296,896.07 × 666,870,076.20
  4. Step 4: Simplify right side
    1,231,389,781.65x = 1,133,210,250,568,624,384
  5. Step 5: Solve for x
    x = 1,133,210,250,568,624,384/1,231,389,781.65
  6. Step 6: Final answer
    x = 920,269,331.01

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1.5x scale

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.