Home / 1,580,365.90-2,180,904.93-855,213.61

Finding the Fourth Proportional to 1,580,365.90, 2,180,904.93 and 855,213.61

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Solution

The fourth proportional to 1,580,365.90, 2,180,904.93 and 855,213.61 is: 1,180,194.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,580,365.90 : 2,180,904.93 = 855,213.61 : x
  2. Step 2: Convert to fraction form
    1,580,365.90/2,180,904.93 = 855,213.61/x
  3. Step 3: Cross multiply
    1,580,365.90x = 2,180,904.93 × 855,213.61
  4. Step 4: Simplify right side
    1,580,365.90x = 1,865,139,578,252.10
  5. Step 5: Solve for x
    x = 1,865,139,578,252.10/1,580,365.90
  6. Step 6: Final answer
    x = 1,180,194.78

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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.