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Finding the Fourth Proportional to 529,647.36, 730,910.28 and 300,247.90

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Solution

The fourth proportional to 529,647.36, 730,910.28 and 300,247.90 is: 414,340.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,647.36 : 730,910.28 = 300,247.90 : x
  2. Step 2: Convert to fraction form
    529,647.36/730,910.28 = 300,247.90/x
  3. Step 3: Cross multiply
    529,647.36x = 730,910.28 × 300,247.90
  4. Step 4: Simplify right side
    529,647.36x = 219,454,276,658.41
  5. Step 5: Solve for x
    x = 219,454,276,658.41/529,647.36
  6. Step 6: Final answer
    x = 414,340.36

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1.5x scale

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.