Home / 1,122,518,993.18-1,549,086,233.80-620,761,728.64

Finding the Fourth Proportional to 1,122,518,993.18, 1,549,086,233.80 and 620,761,728.64

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Solution

The fourth proportional to 1,122,518,993.18, 1,549,086,233.80 and 620,761,728.64 is: 856,656,728.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122,518,993.18 : 1,549,086,233.80 = 620,761,728.64 : x
  2. Step 2: Convert to fraction form
    1,122,518,993.18/1,549,086,233.80 = 620,761,728.64/x
  3. Step 3: Cross multiply
    1,122,518,993.18x = 1,549,086,233.80 × 620,761,728.64
  4. Step 4: Simplify right side
    1,122,518,993.18x = 961,613,448,306,115,200
  5. Step 5: Solve for x
    x = 961,613,448,306,115,200/1,122,518,993.18
  6. Step 6: Final answer
    x = 856,656,728.44

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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.