Home / 421,894,911.41-582,159,764.95-243,285,396.60

Finding the Fourth Proportional to 421,894,911.41, 582,159,764.95 and 243,285,396.60

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Solution

The fourth proportional to 421,894,911.41, 582,159,764.95 and 243,285,396.60 is: 335,702,008.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,894,911.41 : 582,159,764.95 = 243,285,396.60 : x
  2. Step 2: Convert to fraction form
    421,894,911.41/582,159,764.95 = 243,285,396.60/x
  3. Step 3: Cross multiply
    421,894,911.41x = 582,159,764.95 × 243,285,396.60
  4. Step 4: Simplify right side
    421,894,911.41x = 141,630,969,299,815,312
  5. Step 5: Solve for x
    x = 141,630,969,299,815,312/421,894,911.41
  6. Step 6: Final answer
    x = 335,702,008.89

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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.