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Finding the Fourth Proportional to 545,990.52, 819,051.39 and 516,130.68

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Solution

The fourth proportional to 545,990.52, 819,051.39 and 516,130.68 is: 774,258.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,990.52 : 819,051.39 = 516,130.68 : x
  2. Step 2: Convert to fraction form
    545,990.52/819,051.39 = 516,130.68/x
  3. Step 3: Cross multiply
    545,990.52x = 819,051.39 × 516,130.68
  4. Step 4: Simplify right side
    545,990.52x = 422,737,550,875.65
  5. Step 5: Solve for x
    x = 422,737,550,875.65/545,990.52
  6. Step 6: Final answer
    x = 774,258.04

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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.