Home / 1,310,678.71-1,966,315.90-399,942.65

Finding the Fourth Proportional to 1,310,678.71, 1,966,315.90 and 399,942.65

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Solution

The fourth proportional to 1,310,678.71, 1,966,315.90 and 399,942.65 is: 600,004.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310,678.71 : 1,966,315.90 = 399,942.65 : x
  2. Step 2: Convert to fraction form
    1,310,678.71/1,966,315.90 = 399,942.65/x
  3. Step 3: Cross multiply
    1,310,678.71x = 1,966,315.90 × 399,942.65
  4. Step 4: Simplify right side
    1,310,678.71x = 786,413,591,783.14
  5. Step 5: Solve for x
    x = 786,413,591,783.14/1,310,678.71
  6. Step 6: Final answer
    x = 600,004.86

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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.