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Finding the Fourth Proportional to 684,656.78, 944,820.87 and 382,850.78

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Solution

The fourth proportional to 684,656.78, 944,820.87 and 382,850.78 is: 528,331.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,656.78 : 944,820.87 = 382,850.78 : x
  2. Step 2: Convert to fraction form
    684,656.78/944,820.87 = 382,850.78/x
  3. Step 3: Cross multiply
    684,656.78x = 944,820.87 × 382,850.78
  4. Step 4: Simplify right side
    684,656.78x = 361,725,407,039.78
  5. Step 5: Solve for x
    x = 361,725,407,039.78/684,656.78
  6. Step 6: Final answer
    x = 528,331.01

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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.