Home / 1,212,787,623.96-1,819,181,610.72-292,663,966.32

Finding the Fourth Proportional to 1,212,787,623.96, 1,819,181,610.72 and 292,663,966.32

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Solution

The fourth proportional to 1,212,787,623.96, 1,819,181,610.72 and 292,663,966.32 is: 438,995,991.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,787,623.96 : 1,819,181,610.72 = 292,663,966.32 : x
  2. Step 2: Convert to fraction form
    1,212,787,623.96/1,819,181,610.72 = 292,663,966.32/x
  3. Step 3: Cross multiply
    1,212,787,623.96x = 1,819,181,610.72 × 292,663,966.32
  4. Step 4: Simplify right side
    1,212,787,623.96x = 532,408,905,649,721,408
  5. Step 5: Solve for x
    x = 532,408,905,649,721,408/1,212,787,623.96
  6. Step 6: Final answer
    x = 438,995,991.66

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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.