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Finding the Fourth Proportional to 464,612.96, 639,971.25 and 328,412.75

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Solution

The fourth proportional to 464,612.96, 639,971.25 and 328,412.75 is: 452,365.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,612.96 : 639,971.25 = 328,412.75 : x
  2. Step 2: Convert to fraction form
    464,612.96/639,971.25 = 328,412.75/x
  3. Step 3: Cross multiply
    464,612.96x = 639,971.25 × 328,412.75
  4. Step 4: Simplify right side
    464,612.96x = 210,174,718,133.44
  5. Step 5: Solve for x
    x = 210,174,718,133.44/464,612.96
  6. Step 6: Final answer
    x = 452,365.16

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1.5x scale

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.