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Finding the Fourth Proportional to 676,857.60, 933,998.40 and 404,870.40

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Solution

The fourth proportional to 676,857.60, 933,998.40 and 404,870.40 is: 558,682.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,857.60 : 933,998.40 = 404,870.40 : x
  2. Step 2: Convert to fraction form
    676,857.60/933,998.40 = 404,870.40/x
  3. Step 3: Cross multiply
    676,857.60x = 933,998.40 × 404,870.40
  4. Step 4: Simplify right side
    676,857.60x = 378,148,305,807.36
  5. Step 5: Solve for x
    x = 378,148,305,807.36/676,857.60
  6. Step 6: Final answer
    x = 558,682.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.