Home / 919,685.40-1,379,512.12-413,888.44

Finding the Fourth Proportional to 919,685.40, 1,379,512.12 and 413,888.44

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Solution

The fourth proportional to 919,685.40, 1,379,512.12 and 413,888.44 is: 620,825.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,685.40 : 1,379,512.12 = 413,888.44 : x
  2. Step 2: Convert to fraction form
    919,685.40/1,379,512.12 = 413,888.44/x
  3. Step 3: Cross multiply
    919,685.40x = 1,379,512.12 × 413,888.44
  4. Step 4: Simplify right side
    919,685.40x = 570,964,119,307.89
  5. Step 5: Solve for x
    x = 570,964,119,307.89/919,685.40
  6. Step 6: Final answer
    x = 620,825.47

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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.