Home / 1,580,520.15-2,181,120.39-855,368.46

Finding the Fourth Proportional to 1,580,520.15, 2,181,120.39 and 855,368.46

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Solution

The fourth proportional to 1,580,520.15, 2,181,120.39 and 855,368.46 is: 1,180,409.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,580,520.15 : 2,181,120.39 = 855,368.46 : x
  2. Step 2: Convert to fraction form
    1,580,520.15/2,181,120.39 = 855,368.46/x
  3. Step 3: Cross multiply
    1,580,520.15x = 2,181,120.39 × 855,368.46
  4. Step 4: Simplify right side
    1,580,520.15x = 1,865,661,589,068.90
  5. Step 5: Solve for x
    x = 1,865,661,589,068.90/1,580,520.15
  6. Step 6: Final answer
    x = 1,180,409.87

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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.