Home / 7,212,945-9,953,864.10-3,993,888.36

Finding the Fourth Proportional to 7,212,945, 9,953,864.10 and 3,993,888.36

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Solution

The fourth proportional to 7,212,945, 9,953,864.10 and 3,993,888.36 is: 5,511,565.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,212,945 : 9,953,864.10 = 3,993,888.36 : x
  2. Step 2: Convert to fraction form
    7,212,945/9,953,864.10 = 3,993,888.36/x
  3. Step 3: Cross multiply
    7,212,945x = 9,953,864.10 × 3,993,888.36
  4. Step 4: Simplify right side
    7,212,945x = 39,754,621,966,011.88
  5. Step 5: Solve for x
    x = 39,754,621,966,011.88/7,212,945
  6. Step 6: Final answer
    x = 5,511,565.94

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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.