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Finding the Fourth Proportional to 1,555,689, 2,146,850.82 and 876,649.80

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Solution

The fourth proportional to 1,555,689, 2,146,850.82 and 876,649.80 is: 1,209,776.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555,689 : 2,146,850.82 = 876,649.80 : x
  2. Step 2: Convert to fraction form
    1,555,689/2,146,850.82 = 876,649.80/x
  3. Step 3: Cross multiply
    1,555,689x = 2,146,850.82 × 876,649.80
  4. Step 4: Simplify right side
    1,555,689x = 1,882,036,341,982.84
  5. Step 5: Solve for x
    x = 1,882,036,341,982.84/1,555,689
  6. Step 6: Final answer
    x = 1,209,776.72

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1.5x scale

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.