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Finding the Fourth Proportional to 563,553, 777,703.32 and 308,905.92

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Solution

The fourth proportional to 563,553, 777,703.32 and 308,905.92 is: 426,290.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,553 : 777,703.32 = 308,905.92 : x
  2. Step 2: Convert to fraction form
    563,553/777,703.32 = 308,905.92/x
  3. Step 3: Cross multiply
    563,553x = 777,703.32 × 308,905.92
  4. Step 4: Simplify right side
    563,553x = 240,237,159,551.65
  5. Step 5: Solve for x
    x = 240,237,159,551.65/563,553
  6. Step 6: Final answer
    x = 426,290.27

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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.