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Finding the Fourth Proportional to 612,617.64, 845,288.46 and 357,919.62

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Solution

The fourth proportional to 612,617.64, 845,288.46 and 357,919.62 is: 493,856.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,617.64 : 845,288.46 = 357,919.62 : x
  2. Step 2: Convert to fraction form
    612,617.64/845,288.46 = 357,919.62/x
  3. Step 3: Cross multiply
    612,617.64x = 845,288.46 × 357,919.62
  4. Step 4: Simplify right side
    612,617.64x = 302,545,324,393.59
  5. Step 5: Solve for x
    x = 302,545,324,393.59/612,617.64
  6. Step 6: Final answer
    x = 493,856.70

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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.