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Finding the Fourth Proportional to 565,548.84, 780,472.42 and 307,443.24

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Solution

The fourth proportional to 565,548.84, 780,472.42 and 307,443.24 is: 424,279.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,548.84 : 780,472.42 = 307,443.24 : x
  2. Step 2: Convert to fraction form
    565,548.84/780,472.42 = 307,443.24/x
  3. Step 3: Cross multiply
    565,548.84x = 780,472.42 × 307,443.24
  4. Step 4: Simplify right side
    565,548.84x = 239,950,969,535.44
  5. Step 5: Solve for x
    x = 239,950,969,535.44/565,548.84
  6. Step 6: Final answer
    x = 424,279.84

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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.