Home / 1,321,360.80-1,982,336.59-422,856.45

Finding the Fourth Proportional to 1,321,360.80, 1,982,336.59 and 422,856.45

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Solution

The fourth proportional to 1,321,360.80, 1,982,336.59 and 422,856.45 is: 634,379.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,360.80 : 1,982,336.59 = 422,856.45 : x
  2. Step 2: Convert to fraction form
    1,321,360.80/1,982,336.59 = 422,856.45/x
  3. Step 3: Cross multiply
    1,321,360.80x = 1,982,336.59 × 422,856.45
  4. Step 4: Simplify right side
    1,321,360.80x = 838,243,813,681.08
  5. Step 5: Solve for x
    x = 838,243,813,681.08/1,321,360.80
  6. Step 6: Final answer
    x = 634,379.21

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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.