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Finding the Fourth Proportional to 612,485.15, 845,875.10 and 545,694.17

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Solution

The fourth proportional to 612,485.15, 845,875.10 and 545,694.17 is: 753,633.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,485.15 : 845,875.10 = 545,694.17 : x
  2. Step 2: Convert to fraction form
    612,485.15/845,875.10 = 545,694.17/x
  3. Step 3: Cross multiply
    612,485.15x = 845,875.10 × 545,694.17
  4. Step 4: Simplify right side
    612,485.15x = 461,589,107,753.03
  5. Step 5: Solve for x
    x = 461,589,107,753.03/612,485.15
  6. Step 6: Final answer
    x = 753,633.15

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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.