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Finding the Fourth Proportional to 610,956.02, 917,104.42 and 485,403.32

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Solution

The fourth proportional to 610,956.02, 917,104.42 and 485,403.32 is: 728,637.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,956.02 : 917,104.42 = 485,403.32 : x
  2. Step 2: Convert to fraction form
    610,956.02/917,104.42 = 485,403.32/x
  3. Step 3: Cross multiply
    610,956.02x = 917,104.42 × 485,403.32
  4. Step 4: Simplify right side
    610,956.02x = 445,165,530,254.67
  5. Step 5: Solve for x
    x = 445,165,530,254.67/610,956.02
  6. Step 6: Final answer
    x = 728,637.60

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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.