Home / 643,810,613.86-888,480,083.82-361,602,710.20

Finding the Fourth Proportional to 643,810,613.86, 888,480,083.82 and 361,602,710.20

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Solution

The fourth proportional to 643,810,613.86, 888,480,083.82 and 361,602,710.20 is: 499,023,780.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,810,613.86 : 888,480,083.82 = 361,602,710.20 : x
  2. Step 2: Convert to fraction form
    643,810,613.86/888,480,083.82 = 361,602,710.20/x
  3. Step 3: Cross multiply
    643,810,613.86x = 888,480,083.82 × 361,602,710.20
  4. Step 4: Simplify right side
    643,810,613.86x = 321,276,806,268,035,200
  5. Step 5: Solve for x
    x = 321,276,806,268,035,200/643,810,613.86
  6. Step 6: Final answer
    x = 499,023,780.21

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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.