Home / 1,378,485.90-2,068,009.10-479,997.70

Finding the Fourth Proportional to 1,378,485.90, 2,068,009.10 and 479,997.70

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Solution

The fourth proportional to 1,378,485.90, 2,068,009.10 and 479,997.70 is: 720,094.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,485.90 : 2,068,009.10 = 479,997.70 : x
  2. Step 2: Convert to fraction form
    1,378,485.90/2,068,009.10 = 479,997.70/x
  3. Step 3: Cross multiply
    1,378,485.90x = 2,068,009.10 × 479,997.70
  4. Step 4: Simplify right side
    1,378,485.90x = 992,639,611,579.07
  5. Step 5: Solve for x
    x = 992,639,611,579.07/1,378,485.90
  6. Step 6: Final answer
    x = 720,094.13

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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.