Home / 810,845,261-1,216,145,000.64-220,681,489.71

Finding the Fourth Proportional to 810,845,261, 1,216,145,000.64 and 220,681,489.71

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Solution

The fourth proportional to 810,845,261, 1,216,145,000.64 and 220,681,489.71 is: 330,988,788.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,845,261 : 1,216,145,000.64 = 220,681,489.71 : x
  2. Step 2: Convert to fraction form
    810,845,261/1,216,145,000.64 = 220,681,489.71/x
  3. Step 3: Cross multiply
    810,845,261x = 1,216,145,000.64 × 220,681,489.71
  4. Step 4: Simplify right side
    810,845,261x = 268,380,690,444,604,128
  5. Step 5: Solve for x
    x = 268,380,690,444,604,128/810,845,261
  6. Step 6: Final answer
    x = 330,988,788.31

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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.