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Finding the Fourth Proportional to 563,039.64, 776,987.24 and 308,391.03

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Solution

The fourth proportional to 563,039.64, 776,987.24 and 308,391.03 is: 425,575.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,039.64 : 776,987.24 = 308,391.03 : x
  2. Step 2: Convert to fraction form
    563,039.64/776,987.24 = 308,391.03/x
  3. Step 3: Cross multiply
    563,039.64x = 776,987.24 × 308,391.03
  4. Step 4: Simplify right side
    563,039.64x = 239,615,893,698.50
  5. Step 5: Solve for x
    x = 239,615,893,698.50/563,039.64
  6. Step 6: Final answer
    x = 425,575.53

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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.