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Finding the Fourth Proportional to 607,503.40, 911,255.10 and 406,736.80

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Solution

The fourth proportional to 607,503.40, 911,255.10 and 406,736.80 is: 610,105.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,503.40 : 911,255.10 = 406,736.80 : x
  2. Step 2: Convert to fraction form
    607,503.40/911,255.10 = 406,736.80/x
  3. Step 3: Cross multiply
    607,503.40x = 911,255.10 × 406,736.80
  4. Step 4: Simplify right side
    607,503.40x = 370,640,983,357.68
  5. Step 5: Solve for x
    x = 370,640,983,357.68/607,503.40
  6. Step 6: Final answer
    x = 610,105.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.