Home / 672,723.81-1,007,943.78-405,923.70

Finding the Fourth Proportional to 672,723.81, 1,007,943.78 and 405,923.70

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Solution

The fourth proportional to 672,723.81, 1,007,943.78 and 405,923.70 is: 608,196.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,723.81 : 1,007,943.78 = 405,923.70 : x
  2. Step 2: Convert to fraction form
    672,723.81/1,007,943.78 = 405,923.70/x
  3. Step 3: Cross multiply
    672,723.81x = 1,007,943.78 × 405,923.70
  4. Step 4: Simplify right side
    672,723.81x = 409,148,268,569.59
  5. Step 5: Solve for x
    x = 409,148,268,569.59/672,723.81
  6. Step 6: Final answer
    x = 608,196.50

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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.