Home / 1,433,356.08-1,978,113.12-821,610.72

Finding the Fourth Proportional to 1,433,356.08, 1,978,113.12 and 821,610.72

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Solution

The fourth proportional to 1,433,356.08, 1,978,113.12 and 821,610.72 is: 1,133,869.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433,356.08 : 1,978,113.12 = 821,610.72 : x
  2. Step 2: Convert to fraction form
    1,433,356.08/1,978,113.12 = 821,610.72/x
  3. Step 3: Cross multiply
    1,433,356.08x = 1,978,113.12 × 821,610.72
  4. Step 4: Simplify right side
    1,433,356.08x = 1,625,238,944,764.65
  5. Step 5: Solve for x
    x = 1,625,238,944,764.65/1,433,356.08
  6. Step 6: Final answer
    x = 1,133,869.64

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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.