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Finding the Fourth Proportional to 603,730.76, 905,843.93 and 319,345.29

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Solution

The fourth proportional to 603,730.76, 905,843.93 and 319,345.29 is: 479,149.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,730.76 : 905,843.93 = 319,345.29 : x
  2. Step 2: Convert to fraction form
    603,730.76/905,843.93 = 319,345.29/x
  3. Step 3: Cross multiply
    603,730.76x = 905,843.93 × 319,345.29
  4. Step 4: Simplify right side
    603,730.76x = 289,276,990,923.86
  5. Step 5: Solve for x
    x = 289,276,990,923.86/603,730.76
  6. Step 6: Final answer
    x = 479,149.01

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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.