Home / 909,579.78-1,255,712.22-547,084.56

Finding the Fourth Proportional to 909,579.78, 1,255,712.22 and 547,084.56

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Solution

The fourth proportional to 909,579.78, 1,255,712.22 and 547,084.56 is: 755,272.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,579.78 : 1,255,712.22 = 547,084.56 : x
  2. Step 2: Convert to fraction form
    909,579.78/1,255,712.22 = 547,084.56/x
  3. Step 3: Cross multiply
    909,579.78x = 1,255,712.22 × 547,084.56
  4. Step 4: Simplify right side
    909,579.78x = 686,980,767,365.32
  5. Step 5: Solve for x
    x = 686,980,767,365.32/909,579.78
  6. Step 6: Final answer
    x = 755,272.69

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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.