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Finding the Fourth Proportional to 657,793.85, 907,755.50 and 355,987.85

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Solution

The fourth proportional to 657,793.85, 907,755.50 and 355,987.85 is: 491,263.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,793.85 : 907,755.50 = 355,987.85 : x
  2. Step 2: Convert to fraction form
    657,793.85/907,755.50 = 355,987.85/x
  3. Step 3: Cross multiply
    657,793.85x = 907,755.50 × 355,987.85
  4. Step 4: Simplify right side
    657,793.85x = 323,149,922,451.96
  5. Step 5: Solve for x
    x = 323,149,922,451.96/657,793.85
  6. Step 6: Final answer
    x = 491,263.22

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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.