Home / 1,311,624.90-1,968,009.61-459,308.28

Finding the Fourth Proportional to 1,311,624.90, 1,968,009.61 and 459,308.28

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Solution

The fourth proportional to 1,311,624.90, 1,968,009.61 and 459,308.28 is: 689,162.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,624.90 : 1,968,009.61 = 459,308.28 : x
  2. Step 2: Convert to fraction form
    1,311,624.90/1,968,009.61 = 459,308.28/x
  3. Step 3: Cross multiply
    1,311,624.90x = 1,968,009.61 × 459,308.28
  4. Step 4: Simplify right side
    1,311,624.90x = 903,923,096,855.98
  5. Step 5: Solve for x
    x = 903,923,096,855.98/1,311,624.90
  6. Step 6: Final answer
    x = 689,162.81

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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.