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Finding the Fourth Proportional to 565,520.44, 780,411.90 and 307,391.80

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Solution

The fourth proportional to 565,520.44, 780,411.90 and 307,391.80 is: 424,197.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,520.44 : 780,411.90 = 307,391.80 : x
  2. Step 2: Convert to fraction form
    565,520.44/780,411.90 = 307,391.80/x
  3. Step 3: Cross multiply
    565,520.44x = 780,411.90 × 307,391.80
  4. Step 4: Simplify right side
    565,520.44x = 239,892,218,682.42
  5. Step 5: Solve for x
    x = 239,892,218,682.42/565,520.44
  6. Step 6: Final answer
    x = 424,197.26

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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.