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Finding the Fourth Proportional to 770,837.80, 1,154,787.90 and 415,733.80

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Solution

The fourth proportional to 770,837.80, 1,154,787.90 and 415,733.80 is: 622,808.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,837.80 : 1,154,787.90 = 415,733.80 : x
  2. Step 2: Convert to fraction form
    770,837.80/1,154,787.90 = 415,733.80/x
  3. Step 3: Cross multiply
    770,837.80x = 1,154,787.90 × 415,733.80
  4. Step 4: Simplify right side
    770,837.80x = 480,084,361,861.02
  5. Step 5: Solve for x
    x = 480,084,361,861.02/770,837.80
  6. Step 6: Final answer
    x = 622,808.54

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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.