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Finding the Fourth Proportional to 565,557.80, 780,458.10 and 339,276.20

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Solution

The fourth proportional to 565,557.80, 780,458.10 and 339,276.20 is: 468,194.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,557.80 : 780,458.10 = 339,276.20 : x
  2. Step 2: Convert to fraction form
    565,557.80/780,458.10 = 339,276.20/x
  3. Step 3: Cross multiply
    565,557.80x = 780,458.10 × 339,276.20
  4. Step 4: Simplify right side
    565,557.80x = 264,790,858,427.22
  5. Step 5: Solve for x
    x = 264,790,858,427.22/565,557.80
  6. Step 6: Final answer
    x = 468,194.16

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1.5x scale

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.