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Finding the Fourth Proportional to 626,199.63, 864,128.98 and 354,272.15

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Solution

The fourth proportional to 626,199.63, 864,128.98 and 354,272.15 is: 488,880.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,199.63 : 864,128.98 = 354,272.15 : x
  2. Step 2: Convert to fraction form
    626,199.63/864,128.98 = 354,272.15/x
  3. Step 3: Cross multiply
    626,199.63x = 864,128.98 × 354,272.15
  4. Step 4: Simplify right side
    626,199.63x = 306,136,832,232.29
  5. Step 5: Solve for x
    x = 306,136,832,232.29/626,199.63
  6. Step 6: Final answer
    x = 488,880.57

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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.