Home / 615,828.80-923,743.20-378,401.60

Finding the Fourth Proportional to 615,828.80, 923,743.20 and 378,401.60

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Solution

The fourth proportional to 615,828.80, 923,743.20 and 378,401.60 is: 567,602.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,828.80 : 923,743.20 = 378,401.60 : x
  2. Step 2: Convert to fraction form
    615,828.80/923,743.20 = 378,401.60/x
  3. Step 3: Cross multiply
    615,828.80x = 923,743.20 × 378,401.60
  4. Step 4: Simplify right side
    615,828.80x = 349,545,904,869.12
  5. Step 5: Solve for x
    x = 349,545,904,869.12/615,828.80
  6. Step 6: Final answer
    x = 567,602.40

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Double scale
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Similar ratio
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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.