Home / 1,087,708,823.72-1,630,895,065.78-422,947,972.07

Finding the Fourth Proportional to 1,087,708,823.72, 1,630,895,065.78 and 422,947,972.07

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Solution

The fourth proportional to 1,087,708,823.72, 1,630,895,065.78 and 422,947,972.07 is: 634,162,144.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087,708,823.72 : 1,630,895,065.78 = 422,947,972.07 : x
  2. Step 2: Convert to fraction form
    1,087,708,823.72/1,630,895,065.78 = 422,947,972.07/x
  3. Step 3: Cross multiply
    1,087,708,823.72x = 1,630,895,065.78 × 422,947,972.07
  4. Step 4: Simplify right side
    1,087,708,823.72x = 689,783,760,721,408,384
  5. Step 5: Solve for x
    x = 689,783,760,721,408,384/1,087,708,823.72
  6. Step 6: Final answer
    x = 634,162,144.94

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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.