Home / 1,320,057.18-1,980,918.72-561,897.43

Finding the Fourth Proportional to 1,320,057.18, 1,980,918.72 and 561,897.43

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Solution

The fourth proportional to 1,320,057.18, 1,980,918.72 and 561,897.43 is: 843,200.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,057.18 : 1,980,918.72 = 561,897.43 : x
  2. Step 2: Convert to fraction form
    1,320,057.18/1,980,918.72 = 561,897.43/x
  3. Step 3: Cross multiply
    1,320,057.18x = 1,980,918.72 × 561,897.43
  4. Step 4: Simplify right side
    1,320,057.18x = 1,113,073,134,997.40
  5. Step 5: Solve for x
    x = 1,113,073,134,997.40/1,320,057.18
  6. Step 6: Final answer
    x = 843,200.70

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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.