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Finding the Fourth Proportional to 464,220.96, 640,820.88 and 313,522.08

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Solution

The fourth proportional to 464,220.96, 640,820.88 and 313,522.08 is: 432,792.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,220.96 : 640,820.88 = 313,522.08 : x
  2. Step 2: Convert to fraction form
    464,220.96/640,820.88 = 313,522.08/x
  3. Step 3: Cross multiply
    464,220.96x = 640,820.88 × 313,522.08
  4. Step 4: Simplify right side
    464,220.96x = 200,911,495,205.03
  5. Step 5: Solve for x
    x = 200,911,495,205.03/464,220.96
  6. Step 6: Final answer
    x = 432,792.81

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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.