Home / 879,400.73-1,214,330.39-553,257.36

Finding the Fourth Proportional to 879,400.73, 1,214,330.39 and 553,257.36

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Solution

The fourth proportional to 879,400.73, 1,214,330.39 and 553,257.36 is: 763,971.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,400.73 : 1,214,330.39 = 553,257.36 : x
  2. Step 2: Convert to fraction form
    879,400.73/1,214,330.39 = 553,257.36/x
  3. Step 3: Cross multiply
    879,400.73x = 1,214,330.39 × 553,257.36
  4. Step 4: Simplify right side
    879,400.73x = 671,837,222,972.88
  5. Step 5: Solve for x
    x = 671,837,222,972.88/879,400.73
  6. Step 6: Final answer
    x = 763,971.65

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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.