Home / 705,407.71-1,057,840.80-300,343.11

Finding the Fourth Proportional to 705,407.71, 1,057,840.80 and 300,343.11

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Solution

The fourth proportional to 705,407.71, 1,057,840.80 and 300,343.11 is: 450,399.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,407.71 : 1,057,840.80 = 300,343.11 : x
  2. Step 2: Convert to fraction form
    705,407.71/1,057,840.80 = 300,343.11/x
  3. Step 3: Cross multiply
    705,407.71x = 1,057,840.80 × 300,343.11
  4. Step 4: Simplify right side
    705,407.71x = 317,715,191,159.56
  5. Step 5: Solve for x
    x = 317,715,191,159.56/705,407.71
  6. Step 6: Final answer
    x = 450,399.37

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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.