Home / 861,053,590.37-1,291,785,662.60-278,788,011.23

Finding the Fourth Proportional to 861,053,590.37, 1,291,785,662.60 and 278,788,011.23

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Solution

The fourth proportional to 861,053,590.37, 1,291,785,662.60 and 278,788,011.23 is: 418,248,480.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,053,590.37 : 1,291,785,662.60 = 278,788,011.23 : x
  2. Step 2: Convert to fraction form
    861,053,590.37/1,291,785,662.60 = 278,788,011.23/x
  3. Step 3: Cross multiply
    861,053,590.37x = 1,291,785,662.60 × 278,788,011.23
  4. Step 4: Simplify right side
    861,053,590.37x = 360,134,355,811,681,792
  5. Step 5: Solve for x
    x = 360,134,355,811,681,792/861,053,590.37
  6. Step 6: Final answer
    x = 418,248,480.51

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