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Finding the Fourth Proportional to 563,391.28, 777,486.08 and 308,737

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Solution

The fourth proportional to 563,391.28, 777,486.08 and 308,737 is: 426,060.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,391.28 : 777,486.08 = 308,737 : x
  2. Step 2: Convert to fraction form
    563,391.28/777,486.08 = 308,737/x
  3. Step 3: Cross multiply
    563,391.28x = 777,486.08 × 308,737
  4. Step 4: Simplify right side
    563,391.28x = 240,038,719,880.96
  5. Step 5: Solve for x
    x = 240,038,719,880.96/563,391.28
  6. Step 6: Final answer
    x = 426,060.41

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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.