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Finding the Fourth Proportional to 575,108.40, 862,662.60 and 407,146.80

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Solution

The fourth proportional to 575,108.40, 862,662.60 and 407,146.80 is: 610,720.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,108.40 : 862,662.60 = 407,146.80 : x
  2. Step 2: Convert to fraction form
    575,108.40/862,662.60 = 407,146.80/x
  3. Step 3: Cross multiply
    575,108.40x = 862,662.60 × 407,146.80
  4. Step 4: Simplify right side
    575,108.40x = 351,230,317,069.68
  5. Step 5: Solve for x
    x = 351,230,317,069.68/575,108.40
  6. Step 6: Final answer
    x = 610,720.20

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Double scale
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Similar ratio
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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.