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Finding the Fourth Proportional to 640,492.72, 883,883.42 and 350,104.68

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Solution

The fourth proportional to 640,492.72, 883,883.42 and 350,104.68 is: 483,146.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,492.72 : 883,883.42 = 350,104.68 : x
  2. Step 2: Convert to fraction form
    640,492.72/883,883.42 = 350,104.68/x
  3. Step 3: Cross multiply
    640,492.72x = 883,883.42 × 350,104.68
  4. Step 4: Simplify right side
    640,492.72x = 309,451,721,916.41
  5. Step 5: Solve for x
    x = 309,451,721,916.41/640,492.72
  6. Step 6: Final answer
    x = 483,146.35

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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.