Home / 1,310,678.21-1,966,315.15-399,942.15

Finding the Fourth Proportional to 1,310,678.21, 1,966,315.15 and 399,942.15

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Solution

The fourth proportional to 1,310,678.21, 1,966,315.15 and 399,942.15 is: 600,004.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310,678.21 : 1,966,315.15 = 399,942.15 : x
  2. Step 2: Convert to fraction form
    1,310,678.21/1,966,315.15 = 399,942.15/x
  3. Step 3: Cross multiply
    1,310,678.21x = 1,966,315.15 × 399,942.15
  4. Step 4: Simplify right side
    1,310,678.21x = 786,412,308,668.57
  5. Step 5: Solve for x
    x = 786,412,308,668.57/1,310,678.21
  6. Step 6: Final answer
    x = 600,004.11

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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.