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Finding the Fourth Proportional to 559,112.50, 771,607.64 and 421,044.26

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Solution

The fourth proportional to 559,112.50, 771,607.64 and 421,044.26 is: 581,065.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,112.50 : 771,607.64 = 421,044.26 : x
  2. Step 2: Convert to fraction form
    559,112.50/771,607.64 = 421,044.26/x
  3. Step 3: Cross multiply
    559,112.50x = 771,607.64 × 421,044.26
  4. Step 4: Simplify right side
    559,112.50x = 324,880,967,794.15
  5. Step 5: Solve for x
    x = 324,880,967,794.15/559,112.50
  6. Step 6: Final answer
    x = 581,065.47

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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.