Home / 1,278,508,726.80-1,917,763,090.20-589,761,190.80

Finding the Fourth Proportional to 1,278,508,726.80, 1,917,763,090.20 and 589,761,190.80

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Solution

The fourth proportional to 1,278,508,726.80, 1,917,763,090.20 and 589,761,190.80 is: 884,641,786.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,508,726.80 : 1,917,763,090.20 = 589,761,190.80 : x
  2. Step 2: Convert to fraction form
    1,278,508,726.80/1,917,763,090.20 = 589,761,190.80/x
  3. Step 3: Cross multiply
    1,278,508,726.80x = 1,917,763,090.20 × 589,761,190.80
  4. Step 4: Simplify right side
    1,278,508,726.80x = 1,131,022,243,748,639,744
  5. Step 5: Solve for x
    x = 1,131,022,243,748,639,744/1,278,508,726.80
  6. Step 6: Final answer
    x = 884,641,786.20

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Double scale
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1.5x scale

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.