Home / 745,240.20-1,028,431.20-405,708.36

Finding the Fourth Proportional to 745,240.20, 1,028,431.20 and 405,708.36

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Solution

The fourth proportional to 745,240.20, 1,028,431.20 and 405,708.36 is: 559,877.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,240.20 : 1,028,431.20 = 405,708.36 : x
  2. Step 2: Convert to fraction form
    745,240.20/1,028,431.20 = 405,708.36/x
  3. Step 3: Cross multiply
    745,240.20x = 1,028,431.20 × 405,708.36
  4. Step 4: Simplify right side
    745,240.20x = 417,243,135,524.83
  5. Step 5: Solve for x
    x = 417,243,135,524.83/745,240.20
  6. Step 6: Final answer
    x = 559,877.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.