Home / 977,406.83-1,348,021.74-687,976.52

Finding the Fourth Proportional to 977,406.83, 1,348,021.74 and 687,976.52

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Solution

The fourth proportional to 977,406.83, 1,348,021.74 and 687,976.52 is: 948,844.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,406.83 : 1,348,021.74 = 687,976.52 : x
  2. Step 2: Convert to fraction form
    977,406.83/1,348,021.74 = 687,976.52/x
  3. Step 3: Cross multiply
    977,406.83x = 1,348,021.74 × 687,976.52
  4. Step 4: Simplify right side
    977,406.83x = 927,407,306,429.52
  5. Step 5: Solve for x
    x = 927,407,306,429.52/977,406.83
  6. Step 6: Final answer
    x = 948,844.71

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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.