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Finding the Fourth Proportional to 706,145.64, 1,058,621.40 and 306,486

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Solution

The fourth proportional to 706,145.64, 1,058,621.40 and 306,486 is: 459,469.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,145.64 : 1,058,621.40 = 306,486 : x
  2. Step 2: Convert to fraction form
    706,145.64/1,058,621.40 = 306,486/x
  3. Step 3: Cross multiply
    706,145.64x = 1,058,621.40 × 306,486
  4. Step 4: Simplify right side
    706,145.64x = 324,452,638,400.40
  5. Step 5: Solve for x
    x = 324,452,638,400.40/706,145.64
  6. Step 6: Final answer
    x = 459,469.86

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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.