Home / 1,320,983.16-1,980,129.78-521,166.84

Finding the Fourth Proportional to 1,320,983.16, 1,980,129.78 and 521,166.84

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Solution

The fourth proportional to 1,320,983.16, 1,980,129.78 and 521,166.84 is: 781,219.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,983.16 : 1,980,129.78 = 521,166.84 : x
  2. Step 2: Convert to fraction form
    1,320,983.16/1,980,129.78 = 521,166.84/x
  3. Step 3: Cross multiply
    1,320,983.16x = 1,980,129.78 × 521,166.84
  4. Step 4: Simplify right side
    1,320,983.16x = 1,031,977,980,232.50
  5. Step 5: Solve for x
    x = 1,031,977,980,232.50/1,320,983.16
  6. Step 6: Final answer
    x = 781,219.63

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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.