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Finding the Fourth Proportional to 853,715.60, 1,279,698.60 and 498,546.80

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Solution

The fourth proportional to 853,715.60, 1,279,698.60 and 498,546.80 is: 747,309.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,715.60 : 1,279,698.60 = 498,546.80 : x
  2. Step 2: Convert to fraction form
    853,715.60/1,279,698.60 = 498,546.80/x
  3. Step 3: Cross multiply
    853,715.60x = 1,279,698.60 × 498,546.80
  4. Step 4: Simplify right side
    853,715.60x = 637,989,641,994.48
  5. Step 5: Solve for x
    x = 637,989,641,994.48/853,715.60
  6. Step 6: Final answer
    x = 747,309.34

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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.