Home / 1,286,243.32-1,929,346.28-313,611.52

Finding the Fourth Proportional to 1,286,243.32, 1,929,346.28 and 313,611.52

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Solution

The fourth proportional to 1,286,243.32, 1,929,346.28 and 313,611.52 is: 470,412.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,243.32 : 1,929,346.28 = 313,611.52 : x
  2. Step 2: Convert to fraction form
    1,286,243.32/1,929,346.28 = 313,611.52/x
  3. Step 3: Cross multiply
    1,286,243.32x = 1,929,346.28 × 313,611.52
  4. Step 4: Simplify right side
    1,286,243.32x = 605,065,219,477.15
  5. Step 5: Solve for x
    x = 605,065,219,477.15/1,286,243.32
  6. Step 6: Final answer
    x = 470,412.72

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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.