Home / 909,656,732.05-1,255,326,289.29-491,969,016.86

Finding the Fourth Proportional to 909,656,732.05, 1,255,326,289.29 and 491,969,016.86

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Solution

The fourth proportional to 909,656,732.05, 1,255,326,289.29 and 491,969,016.86 is: 678,917,242.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,656,732.05 : 1,255,326,289.29 = 491,969,016.86 : x
  2. Step 2: Convert to fraction form
    909,656,732.05/1,255,326,289.29 = 491,969,016.86/x
  3. Step 3: Cross multiply
    909,656,732.05x = 1,255,326,289.29 × 491,969,016.86
  4. Step 4: Simplify right side
    909,656,732.05x = 617,581,640,374,236,672
  5. Step 5: Solve for x
    x = 617,581,640,374,236,672/909,656,732.05
  6. Step 6: Final answer
    x = 678,917,242.75

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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.