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Finding the Fourth Proportional to 635,443.74, 953,384.34 and 398,509.02

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Solution

The fourth proportional to 635,443.74, 953,384.34 and 398,509.02 is: 597,900.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,443.74 : 953,384.34 = 398,509.02 : x
  2. Step 2: Convert to fraction form
    635,443.74/953,384.34 = 398,509.02/x
  3. Step 3: Cross multiply
    635,443.74x = 953,384.34 × 398,509.02
  4. Step 4: Simplify right side
    635,443.74x = 379,932,259,016.75
  5. Step 5: Solve for x
    x = 379,932,259,016.75/635,443.74
  6. Step 6: Final answer
    x = 597,900.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.