Home / 876,190.78-1,209,179.91-553,783.78

Finding the Fourth Proportional to 876,190.78, 1,209,179.91 and 553,783.78

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Solution

The fourth proportional to 876,190.78, 1,209,179.91 and 553,783.78 is: 764,244.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,190.78 : 1,209,179.91 = 553,783.78 : x
  2. Step 2: Convert to fraction form
    876,190.78/1,209,179.91 = 553,783.78/x
  3. Step 3: Cross multiply
    876,190.78x = 1,209,179.91 × 553,783.78
  4. Step 4: Simplify right side
    876,190.78x = 669,624,221,259.86
  5. Step 5: Solve for x
    x = 669,624,221,259.86/876,190.78
  6. Step 6: Final answer
    x = 764,244.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.