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Finding the Fourth Proportional to 464,607.72, 640,479.99 and 328,401.36

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Solution

The fourth proportional to 464,607.72, 640,479.99 and 328,401.36 is: 452,714.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,607.72 : 640,479.99 = 328,401.36 : x
  2. Step 2: Convert to fraction form
    464,607.72/640,479.99 = 328,401.36/x
  3. Step 3: Cross multiply
    464,607.72x = 640,479.99 × 328,401.36
  4. Step 4: Simplify right side
    464,607.72x = 210,334,499,768.79
  5. Step 5: Solve for x
    x = 210,334,499,768.79/464,607.72
  6. Step 6: Final answer
    x = 452,714.17

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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.