Home / 915,285.30-1,263,105.13-528,181.06

Finding the Fourth Proportional to 915,285.30, 1,263,105.13 and 528,181.06

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Solution

The fourth proportional to 915,285.30, 1,263,105.13 and 528,181.06 is: 728,896.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,285.30 : 1,263,105.13 = 528,181.06 : x
  2. Step 2: Convert to fraction form
    915,285.30/1,263,105.13 = 528,181.06/x
  3. Step 3: Cross multiply
    915,285.30x = 1,263,105.13 × 528,181.06
  4. Step 4: Simplify right side
    915,285.30x = 667,148,208,823.08
  5. Step 5: Solve for x
    x = 667,148,208,823.08/915,285.30
  6. Step 6: Final answer
    x = 728,896.45

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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.