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Finding the Fourth Proportional to 1,260,961.30, 1,888,331.55 and 837,946.90

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Solution

The fourth proportional to 1,260,961.30, 1,888,331.55 and 837,946.90 is: 1,254,853.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,961.30 : 1,888,331.55 = 837,946.90 : x
  2. Step 2: Convert to fraction form
    1,260,961.30/1,888,331.55 = 837,946.90/x
  3. Step 3: Cross multiply
    1,260,961.30x = 1,888,331.55 × 837,946.90
  4. Step 4: Simplify right side
    1,260,961.30x = 1,582,321,568,494.70
  5. Step 5: Solve for x
    x = 1,582,321,568,494.70/1,260,961.30
  6. Step 6: Final answer
    x = 1,254,853.40

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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.