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Finding the Fourth Proportional to 565,767.54, 780,760.80 and 307,644.60

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Solution

The fourth proportional to 565,767.54, 780,760.80 and 307,644.60 is: 424,550.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,767.54 : 780,760.80 = 307,644.60 : x
  2. Step 2: Convert to fraction form
    565,767.54/780,760.80 = 307,644.60/x
  3. Step 3: Cross multiply
    565,767.54x = 780,760.80 × 307,644.60
  4. Step 4: Simplify right side
    565,767.54x = 240,196,844,011.68
  5. Step 5: Solve for x
    x = 240,196,844,011.68/565,767.54
  6. Step 6: Final answer
    x = 424,550.42

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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.