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Finding the Fourth Proportional to 643,502.12, 960,028.13 and 608,665.64

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Solution

The fourth proportional to 643,502.12, 960,028.13 and 608,665.64 is: 908,056.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,502.12 : 960,028.13 = 608,665.64 : x
  2. Step 2: Convert to fraction form
    643,502.12/960,028.13 = 608,665.64/x
  3. Step 3: Cross multiply
    643,502.12x = 960,028.13 × 608,665.64
  4. Step 4: Simplify right side
    643,502.12x = 584,336,136,164.45
  5. Step 5: Solve for x
    x = 584,336,136,164.45/643,502.12
  6. Step 6: Final answer
    x = 908,056.27

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.