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Finding the Fourth Proportional to 565,656.47, 780,589.49 and 320,663.94

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Solution

The fourth proportional to 565,656.47, 780,589.49 and 320,663.94 is: 442,506.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,656.47 : 780,589.49 = 320,663.94 : x
  2. Step 2: Convert to fraction form
    565,656.47/780,589.49 = 320,663.94/x
  3. Step 3: Cross multiply
    565,656.47x = 780,589.49 × 320,663.94
  4. Step 4: Simplify right side
    565,656.47x = 250,306,899,782.67
  5. Step 5: Solve for x
    x = 250,306,899,782.67/565,656.47
  6. Step 6: Final answer
    x = 442,506.92

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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.