Home / 529,827.30-731,139.38-300,400.02

Finding the Fourth Proportional to 529,827.30, 731,139.38 and 300,400.02

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Solution

The fourth proportional to 529,827.30, 731,139.38 and 300,400.02 is: 414,539.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,827.30 : 731,139.38 = 300,400.02 : x
  2. Step 2: Convert to fraction form
    529,827.30/731,139.38 = 300,400.02/x
  3. Step 3: Cross multiply
    529,827.30x = 731,139.38 × 300,400.02
  4. Step 4: Simplify right side
    529,827.30x = 219,634,284,374.79
  5. Step 5: Solve for x
    x = 219,634,284,374.79/529,827.30
  6. Step 6: Final answer
    x = 414,539.39

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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.