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Finding the Fourth Proportional to 643,501.12, 960,026.64 and 608,664.64

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Solution

The fourth proportional to 643,501.12, 960,026.64 and 608,664.64 is: 908,054.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,501.12 : 960,026.64 = 608,664.64 : x
  2. Step 2: Convert to fraction form
    643,501.12/960,026.64 = 608,664.64/x
  3. Step 3: Cross multiply
    643,501.12x = 960,026.64 × 608,664.64
  4. Step 4: Simplify right side
    643,501.12x = 584,334,269,226.01
  5. Step 5: Solve for x
    x = 584,334,269,226.01/643,501.12
  6. Step 6: Final answer
    x = 908,054.78

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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.