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Finding the Fourth Proportional to 513,999.60, 770,999.40 and 458,887.20

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Solution

The fourth proportional to 513,999.60, 770,999.40 and 458,887.20 is: 688,330.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,999.60 : 770,999.40 = 458,887.20 : x
  2. Step 2: Convert to fraction form
    513,999.60/770,999.40 = 458,887.20/x
  3. Step 3: Cross multiply
    513,999.60x = 770,999.40 × 458,887.20
  4. Step 4: Simplify right side
    513,999.60x = 353,801,755,867.68
  5. Step 5: Solve for x
    x = 353,801,755,867.68/513,999.60
  6. Step 6: Final answer
    x = 688,330.80

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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.