Home / 529,827.31-731,139.42-300,400.03

Finding the Fourth Proportional to 529,827.31, 731,139.42 and 300,400.03

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Solution

The fourth proportional to 529,827.31, 731,139.42 and 300,400.03 is: 414,539.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,827.31 : 731,139.42 = 300,400.03 : x
  2. Step 2: Convert to fraction form
    529,827.31/731,139.42 = 300,400.03/x
  3. Step 3: Cross multiply
    529,827.31x = 731,139.42 × 300,400.03
  4. Step 4: Simplify right side
    529,827.31x = 219,634,303,702.18
  5. Step 5: Solve for x
    x = 219,634,303,702.18/529,827.31
  6. Step 6: Final answer
    x = 414,539.42

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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.