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Finding the Fourth Proportional to 400,430.60, 599,771.10 and 310,982.30

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Solution

The fourth proportional to 400,430.60, 599,771.10 and 310,982.30 is: 465,794.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,430.60 : 599,771.10 = 310,982.30 : x
  2. Step 2: Convert to fraction form
    400,430.60/599,771.10 = 310,982.30/x
  3. Step 3: Cross multiply
    400,430.60x = 599,771.10 × 310,982.30
  4. Step 4: Simplify right side
    400,430.60x = 186,518,196,151.53
  5. Step 5: Solve for x
    x = 186,518,196,151.53/400,430.60
  6. Step 6: Final answer
    x = 465,794.06

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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.