Home / 1,221,898.32-1,686,229.08-678,036.24

Finding the Fourth Proportional to 1,221,898.32, 1,686,229.08 and 678,036.24

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Solution

The fourth proportional to 1,221,898.32, 1,686,229.08 and 678,036.24 is: 935,695.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,898.32 : 1,686,229.08 = 678,036.24 : x
  2. Step 2: Convert to fraction form
    1,221,898.32/1,686,229.08 = 678,036.24/x
  3. Step 3: Cross multiply
    1,221,898.32x = 1,686,229.08 × 678,036.24
  4. Step 4: Simplify right side
    1,221,898.32x = 1,143,324,425,181.86
  5. Step 5: Solve for x
    x = 1,143,324,425,181.86/1,221,898.32
  6. Step 6: Final answer
    x = 935,695.23

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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.