Home / 745,135.78-1,028,287.50-405,604

Finding the Fourth Proportional to 745,135.78, 1,028,287.50 and 405,604

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Solution

The fourth proportional to 745,135.78, 1,028,287.50 and 405,604 is: 559,733.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,135.78 : 1,028,287.50 = 405,604 : x
  2. Step 2: Convert to fraction form
    745,135.78/1,028,287.50 = 405,604/x
  3. Step 3: Cross multiply
    745,135.78x = 1,028,287.50 × 405,604
  4. Step 4: Simplify right side
    745,135.78x = 417,077,523,150
  5. Step 5: Solve for x
    x = 417,077,523,150/745,135.78
  6. Step 6: Final answer
    x = 559,733.59

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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.