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Finding the Fourth Proportional to 578,366.43, 798,145.45 and 323,717.61

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Solution

The fourth proportional to 578,366.43, 798,145.45 and 323,717.61 is: 446,730.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,366.43 : 798,145.45 = 323,717.61 : x
  2. Step 2: Convert to fraction form
    578,366.43/798,145.45 = 323,717.61/x
  3. Step 3: Cross multiply
    578,366.43x = 798,145.45 × 323,717.61
  4. Step 4: Simplify right side
    578,366.43x = 258,373,739,690.13
  5. Step 5: Solve for x
    x = 258,373,739,690.13/578,366.43
  6. Step 6: Final answer
    x = 446,730.18

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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.