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Finding the Fourth Proportional to 640,452.48, 960,844.50 and 340,686.06

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Solution

The fourth proportional to 640,452.48, 960,844.50 and 340,686.06 is: 511,117.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,452.48 : 960,844.50 = 340,686.06 : x
  2. Step 2: Convert to fraction form
    640,452.48/960,844.50 = 340,686.06/x
  3. Step 3: Cross multiply
    640,452.48x = 960,844.50 × 340,686.06
  4. Step 4: Simplify right side
    640,452.48x = 327,346,326,977.67
  5. Step 5: Solve for x
    x = 327,346,326,977.67/640,452.48
  6. Step 6: Final answer
    x = 511,117.28

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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.