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Finding the Fourth Proportional to 565,390.80, 780,374.52 and 323,813.16

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Solution

The fourth proportional to 565,390.80, 780,374.52 and 323,813.16 is: 446,939.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,390.80 : 780,374.52 = 323,813.16 : x
  2. Step 2: Convert to fraction form
    565,390.80/780,374.52 = 323,813.16/x
  3. Step 3: Cross multiply
    565,390.80x = 780,374.52 × 323,813.16
  4. Step 4: Simplify right side
    565,390.80x = 252,695,539,304.68
  5. Step 5: Solve for x
    x = 252,695,539,304.68/565,390.80
  6. Step 6: Final answer
    x = 446,939.60

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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.