Home / 919,076.30-1,378,614.45-665,165.60

Finding the Fourth Proportional to 919,076.30, 1,378,614.45 and 665,165.60

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Solution

The fourth proportional to 919,076.30, 1,378,614.45 and 665,165.60 is: 997,748.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,076.30 : 1,378,614.45 = 665,165.60 : x
  2. Step 2: Convert to fraction form
    919,076.30/1,378,614.45 = 665,165.60/x
  3. Step 3: Cross multiply
    919,076.30x = 1,378,614.45 × 665,165.60
  4. Step 4: Simplify right side
    919,076.30x = 917,006,907,802.92
  5. Step 5: Solve for x
    x = 917,006,907,802.92/919,076.30
  6. Step 6: Final answer
    x = 997,748.40

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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.