Home / 1,279,921.32-1,920,931.38-649,015.56

Finding the Fourth Proportional to 1,279,921.32, 1,920,931.38 and 649,015.56

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Solution

The fourth proportional to 1,279,921.32, 1,920,931.38 and 649,015.56 is: 974,055.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,921.32 : 1,920,931.38 = 649,015.56 : x
  2. Step 2: Convert to fraction form
    1,279,921.32/1,920,931.38 = 649,015.56/x
  3. Step 3: Cross multiply
    1,279,921.32x = 1,920,931.38 × 649,015.56
  4. Step 4: Simplify right side
    1,279,921.32x = 1,246,714,355,312.27
  5. Step 5: Solve for x
    x = 1,246,714,355,312.27/1,279,921.32
  6. Step 6: Final answer
    x = 974,055.46

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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.