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Finding the Fourth Proportional to 607,134.80, 910,961.40 and 291,429.20

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Solution

The fourth proportional to 607,134.80, 910,961.40 and 291,429.20 is: 437,268.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,134.80 : 910,961.40 = 291,429.20 : x
  2. Step 2: Convert to fraction form
    607,134.80/910,961.40 = 291,429.20/x
  3. Step 3: Cross multiply
    607,134.80x = 910,961.40 × 291,429.20
  4. Step 4: Simplify right side
    607,134.80x = 265,480,752,032.88
  5. Step 5: Solve for x
    x = 265,480,752,032.88/607,134.80
  6. Step 6: Final answer
    x = 437,268.22

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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.