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Finding the Fourth Proportional to 610,405.39, 842,187.63 and 480,942.51

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Solution

The fourth proportional to 610,405.39, 842,187.63 and 480,942.51 is: 663,565.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,405.39 : 842,187.63 = 480,942.51 : x
  2. Step 2: Convert to fraction form
    610,405.39/842,187.63 = 480,942.51/x
  3. Step 3: Cross multiply
    610,405.39x = 842,187.63 × 480,942.51
  4. Step 4: Simplify right side
    610,405.39x = 405,043,832,663.15
  5. Step 5: Solve for x
    x = 405,043,832,663.15/610,405.39
  6. Step 6: Final answer
    x = 663,565.29

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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.