Home / 1,421,605.44-2,131,208.64-663,047.28

Finding the Fourth Proportional to 1,421,605.44, 2,131,208.64 and 663,047.28

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Solution

The fourth proportional to 1,421,605.44, 2,131,208.64 and 663,047.28 is: 994,011.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,605.44 : 2,131,208.64 = 663,047.28 : x
  2. Step 2: Convert to fraction form
    1,421,605.44/2,131,208.64 = 663,047.28/x
  3. Step 3: Cross multiply
    1,421,605.44x = 2,131,208.64 × 663,047.28
  4. Step 4: Simplify right side
    1,421,605.44x = 1,413,092,091,864.50
  5. Step 5: Solve for x
    x = 1,413,092,091,864.50/1,421,605.44
  6. Step 6: Final answer
    x = 994,011.46

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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.