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Finding the Fourth Proportional to 904,389.48, 1,247,978.77 and 496,489.68

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Solution

The fourth proportional to 904,389.48, 1,247,978.77 and 496,489.68 is: 685,112.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    904,389.48 : 1,247,978.77 = 496,489.68 : x
  2. Step 2: Convert to fraction form
    904,389.48/1,247,978.77 = 496,489.68/x
  3. Step 3: Cross multiply
    904,389.48x = 1,247,978.77 × 496,489.68
  4. Step 4: Simplify right side
    904,389.48x = 619,608,577,681.65
  5. Step 5: Solve for x
    x = 619,608,577,681.65/904,389.48
  6. Step 6: Final answer
    x = 685,112.54

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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.