Home / 1,323,009.80-1,979,849.10-921,768.20

Finding the Fourth Proportional to 1,323,009.80, 1,979,849.10 and 921,768.20

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Solution

The fourth proportional to 1,323,009.80, 1,979,849.10 and 921,768.20 is: 1,379,401.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323,009.80 : 1,979,849.10 = 921,768.20 : x
  2. Step 2: Convert to fraction form
    1,323,009.80/1,979,849.10 = 921,768.20/x
  3. Step 3: Cross multiply
    1,323,009.80x = 1,979,849.10 × 921,768.20
  4. Step 4: Simplify right side
    1,323,009.80x = 1,824,961,941,178.62
  5. Step 5: Solve for x
    x = 1,824,961,941,178.62/1,323,009.80
  6. Step 6: Final answer
    x = 1,379,401.68

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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.