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Finding the Fourth Proportional to 563,403.66, 777,516.98 and 308,754.87

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Solution

The fourth proportional to 563,403.66, 777,516.98 and 308,754.87 is: 426,092.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,403.66 : 777,516.98 = 308,754.87 : x
  2. Step 2: Convert to fraction form
    563,403.66/777,516.98 = 308,754.87/x
  3. Step 3: Cross multiply
    563,403.66x = 777,516.98 × 308,754.87
  4. Step 4: Simplify right side
    563,403.66x = 240,062,152,538.92
  5. Step 5: Solve for x
    x = 240,062,152,538.92/563,403.66
  6. Step 6: Final answer
    x = 426,092.64

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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.