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Finding the Fourth Proportional to 613,467,403.80, 920,201,105.70 and 354,549,348.60

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Solution

The fourth proportional to 613,467,403.80, 920,201,105.70 and 354,549,348.60 is: 531,824,022.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,467,403.80 : 920,201,105.70 = 354,549,348.60 : x
  2. Step 2: Convert to fraction form
    613,467,403.80/920,201,105.70 = 354,549,348.60/x
  3. Step 3: Cross multiply
    613,467,403.80x = 920,201,105.70 × 354,549,348.60
  4. Step 4: Simplify right side
    613,467,403.80x = 326,256,702,606,934,784
  5. Step 5: Solve for x
    x = 326,256,702,606,934,784/613,467,403.80
  6. Step 6: Final answer
    x = 531,824,022.90

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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.