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Finding the Fourth Proportional to 559,635, 772,273.76 and 304,980.72

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Solution

The fourth proportional to 559,635, 772,273.76 and 304,980.72 is: 420,861.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,635 : 772,273.76 = 304,980.72 : x
  2. Step 2: Convert to fraction form
    559,635/772,273.76 = 304,980.72/x
  3. Step 3: Cross multiply
    559,635x = 772,273.76 × 304,980.72
  4. Step 4: Simplify right side
    559,635x = 235,528,607,361.91
  5. Step 5: Solve for x
    x = 235,528,607,361.91/559,635
  6. Step 6: Final answer
    x = 420,861.11

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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.