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Finding the Fourth Proportional to 672,108, 927,509.12 and 370,308.48

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Solution

The fourth proportional to 672,108, 927,509.12 and 370,308.48 is: 511,025.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,108 : 927,509.12 = 370,308.48 : x
  2. Step 2: Convert to fraction form
    672,108/927,509.12 = 370,308.48/x
  3. Step 3: Cross multiply
    672,108x = 927,509.12 × 370,308.48
  4. Step 4: Simplify right side
    672,108x = 343,464,492,413.34
  5. Step 5: Solve for x
    x = 343,464,492,413.34/672,108
  6. Step 6: Final answer
    x = 511,025.75

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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.