Home / 640,060.48-960,087.20-260,979.72

Finding the Fourth Proportional to 640,060.48, 960,087.20 and 260,979.72

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Solution

The fourth proportional to 640,060.48, 960,087.20 and 260,979.72 is: 391,468.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,060.48 : 960,087.20 = 260,979.72 : x
  2. Step 2: Convert to fraction form
    640,060.48/960,087.20 = 260,979.72/x
  3. Step 3: Cross multiply
    640,060.48x = 960,087.20 × 260,979.72
  4. Step 4: Simplify right side
    640,060.48x = 250,563,288,631.58
  5. Step 5: Solve for x
    x = 250,563,288,631.58/640,060.48
  6. Step 6: Final answer
    x = 391,468.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.