Home / 920,553.36-1,380,188.28-407,939.36

Finding the Fourth Proportional to 920,553.36, 1,380,188.28 and 407,939.36

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Solution

The fourth proportional to 920,553.36, 1,380,188.28 and 407,939.36 is: 611,624.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,553.36 : 1,380,188.28 = 407,939.36 : x
  2. Step 2: Convert to fraction form
    920,553.36/1,380,188.28 = 407,939.36/x
  3. Step 3: Cross multiply
    920,553.36x = 1,380,188.28 × 407,939.36
  4. Step 4: Simplify right side
    920,553.36x = 563,033,123,622.70
  5. Step 5: Solve for x
    x = 563,033,123,622.70/920,553.36
  6. Step 6: Final answer
    x = 611,624.65

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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.