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Finding the Fourth Proportional to 640,410.76, 960,594.27 and 303,612.76

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Solution

The fourth proportional to 640,410.76, 960,594.27 and 303,612.76 is: 455,408.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,410.76 : 960,594.27 = 303,612.76 : x
  2. Step 2: Convert to fraction form
    640,410.76/960,594.27 = 303,612.76/x
  3. Step 3: Cross multiply
    640,410.76x = 960,594.27 × 303,612.76
  4. Step 4: Simplify right side
    640,410.76x = 291,648,677,554.89
  5. Step 5: Solve for x
    x = 291,648,677,554.89/640,410.76
  6. Step 6: Final answer
    x = 455,408.77

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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.