Home / 421,894,892.30-582,159,738.67-243,285,377.51

Finding the Fourth Proportional to 421,894,892.30, 582,159,738.67 and 243,285,377.51

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Solution

The fourth proportional to 421,894,892.30, 582,159,738.67 and 243,285,377.51 is: 335,701,982.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,894,892.30 : 582,159,738.67 = 243,285,377.51 : x
  2. Step 2: Convert to fraction form
    421,894,892.30/582,159,738.67 = 243,285,377.51/x
  3. Step 3: Cross multiply
    421,894,892.30x = 582,159,738.67 × 243,285,377.51
  4. Step 4: Simplify right side
    421,894,892.30x = 141,630,951,794,301,072
  5. Step 5: Solve for x
    x = 141,630,951,794,301,072/421,894,892.30
  6. Step 6: Final answer
    x = 335,701,982.60

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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.