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Finding the Fourth Proportional to 640,058.48, 960,084.24 and 260,977.68

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Solution

The fourth proportional to 640,058.48, 960,084.24 and 260,977.68 is: 391,465.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,058.48 : 960,084.24 = 260,977.68 : x
  2. Step 2: Convert to fraction form
    640,058.48/960,084.24 = 260,977.68/x
  3. Step 3: Cross multiply
    640,058.48x = 960,084.24 × 260,977.68
  4. Step 4: Simplify right side
    640,058.48x = 250,560,557,559.76
  5. Step 5: Solve for x
    x = 250,560,557,559.76/640,058.48
  6. Step 6: Final answer
    x = 391,465.10

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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.