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Finding the Fourth Proportional to 485,039.80, 727,559.70 and 366,941.80

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Solution

The fourth proportional to 485,039.80, 727,559.70 and 366,941.80 is: 550,412.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,039.80 : 727,559.70 = 366,941.80 : x
  2. Step 2: Convert to fraction form
    485,039.80/727,559.70 = 366,941.80/x
  3. Step 3: Cross multiply
    485,039.80x = 727,559.70 × 366,941.80
  4. Step 4: Simplify right side
    485,039.80x = 266,972,065,925.46
  5. Step 5: Solve for x
    x = 266,972,065,925.46/485,039.80
  6. Step 6: Final answer
    x = 550,412.70

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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.