Home / 905,007.80-1,357,807-431,631.66

Finding the Fourth Proportional to 905,007.80, 1,357,807 and 431,631.66

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Solution

The fourth proportional to 905,007.80, 1,357,807 and 431,631.66 is: 647,588.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,007.80 : 1,357,807 = 431,631.66 : x
  2. Step 2: Convert to fraction form
    905,007.80/1,357,807 = 431,631.66/x
  3. Step 3: Cross multiply
    905,007.80x = 1,357,807 × 431,631.66
  4. Step 4: Simplify right side
    905,007.80x = 586,072,489,369.62
  5. Step 5: Solve for x
    x = 586,072,489,369.62/905,007.80
  6. Step 6: Final answer
    x = 647,588.33

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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.