Home / 1,119,318.40-1,678,783.20-408,980.80

Finding the Fourth Proportional to 1,119,318.40, 1,678,783.20 and 408,980.80

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Solution

The fourth proportional to 1,119,318.40, 1,678,783.20 and 408,980.80 is: 613,400.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,318.40 : 1,678,783.20 = 408,980.80 : x
  2. Step 2: Convert to fraction form
    1,119,318.40/1,678,783.20 = 408,980.80/x
  3. Step 3: Cross multiply
    1,119,318.40x = 1,678,783.20 × 408,980.80
  4. Step 4: Simplify right side
    1,119,318.40x = 686,590,096,162.56
  5. Step 5: Solve for x
    x = 686,590,096,162.56/1,119,318.40
  6. Step 6: Final answer
    x = 613,400.17

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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.