Home / 1,311,998.74-1,810,567.31-731,259.31

Finding the Fourth Proportional to 1,311,998.74, 1,810,567.31 and 731,259.31

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Solution

The fourth proportional to 1,311,998.74, 1,810,567.31 and 731,259.31 is: 1,009,142.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,998.74 : 1,810,567.31 = 731,259.31 : x
  2. Step 2: Convert to fraction form
    1,311,998.74/1,810,567.31 = 731,259.31/x
  3. Step 3: Cross multiply
    1,311,998.74x = 1,810,567.31 × 731,259.31
  4. Step 4: Simplify right side
    1,311,998.74x = 1,323,994,201,819.16
  5. Step 5: Solve for x
    x = 1,323,994,201,819.16/1,311,998.74
  6. Step 6: Final answer
    x = 1,009,142.89

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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.