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Finding the Fourth Proportional to 528,080.06, 728,559.15 and 346,889.54

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Solution

The fourth proportional to 528,080.06, 728,559.15 and 346,889.54 is: 478,581.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,080.06 : 728,559.15 = 346,889.54 : x
  2. Step 2: Convert to fraction form
    528,080.06/728,559.15 = 346,889.54/x
  3. Step 3: Cross multiply
    528,080.06x = 728,559.15 × 346,889.54
  4. Step 4: Simplify right side
    528,080.06x = 252,729,548,406.29
  5. Step 5: Solve for x
    x = 252,729,548,406.29/528,080.06
  6. Step 6: Final answer
    x = 478,581.88

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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.