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Finding the Fourth Proportional to 563,040.64, 776,988.61 and 308,392.03

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Solution

The fourth proportional to 563,040.64, 776,988.61 and 308,392.03 is: 425,576.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,040.64 : 776,988.61 = 308,392.03 : x
  2. Step 2: Convert to fraction form
    563,040.64/776,988.61 = 308,392.03/x
  3. Step 3: Cross multiply
    563,040.64x = 776,988.61 × 308,392.03
  4. Step 4: Simplify right side
    563,040.64x = 239,617,094,724.78
  5. Step 5: Solve for x
    x = 239,617,094,724.78/563,040.64
  6. Step 6: Final answer
    x = 425,576.91

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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.