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Finding the Fourth Proportional to 528,094.28, 728,770.31 and 286,376.79

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Solution

The fourth proportional to 528,094.28, 728,770.31 and 286,376.79 is: 395,200.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,094.28 : 728,770.31 = 286,376.79 : x
  2. Step 2: Convert to fraction form
    528,094.28/728,770.31 = 286,376.79/x
  3. Step 3: Cross multiply
    528,094.28x = 728,770.31 × 286,376.79
  4. Step 4: Simplify right side
    528,094.28x = 208,702,902,025.11
  5. Step 5: Solve for x
    x = 208,702,902,025.11/528,094.28
  6. Step 6: Final answer
    x = 395,200.08

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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.