Home / 923,200.80-1,383,764.40-390,631.20

Finding the Fourth Proportional to 923,200.80, 1,383,764.40 and 390,631.20

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Solution

The fourth proportional to 923,200.80, 1,383,764.40 and 390,631.20 is: 585,508.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    923,200.80 : 1,383,764.40 = 390,631.20 : x
  2. Step 2: Convert to fraction form
    923,200.80/1,383,764.40 = 390,631.20/x
  3. Step 3: Cross multiply
    923,200.80x = 1,383,764.40 × 390,631.20
  4. Step 4: Simplify right side
    923,200.80x = 540,541,548,089.28
  5. Step 5: Solve for x
    x = 540,541,548,089.28/923,200.80
  6. Step 6: Final answer
    x = 585,508.10

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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.