Home / 861,053,588.37-1,291,785,659.60-278,788,009.23

Finding the Fourth Proportional to 861,053,588.37, 1,291,785,659.60 and 278,788,009.23

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Solution

The fourth proportional to 861,053,588.37, 1,291,785,659.60 and 278,788,009.23 is: 418,248,477.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,053,588.37 : 1,291,785,659.60 = 278,788,009.23 : x
  2. Step 2: Convert to fraction form
    861,053,588.37/1,291,785,659.60 = 278,788,009.23/x
  3. Step 3: Cross multiply
    861,053,588.37x = 1,291,785,659.60 × 278,788,009.23
  4. Step 4: Simplify right side
    861,053,588.37x = 360,134,352,390,352,512
  5. Step 5: Solve for x
    x = 360,134,352,390,352,512/861,053,588.37
  6. Step 6: Final answer
    x = 418,248,477.51

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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.