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Finding the Fourth Proportional to 525,326.60, 724,986 and 292,789.70

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Solution

The fourth proportional to 525,326.60, 724,986 and 292,789.70 is: 404,069.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,326.60 : 724,986 = 292,789.70 : x
  2. Step 2: Convert to fraction form
    525,326.60/724,986 = 292,789.70/x
  3. Step 3: Cross multiply
    525,326.60x = 724,986 × 292,789.70
  4. Step 4: Simplify right side
    525,326.60x = 212,268,433,444.20
  5. Step 5: Solve for x
    x = 212,268,433,444.20/525,326.60
  6. Step 6: Final answer
    x = 404,069.46

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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.