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Finding the Fourth Proportional to 644,881.37, 889,099.54 and 415,027.67

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Solution

The fourth proportional to 644,881.37, 889,099.54 and 415,027.67 is: 572,199.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,881.37 : 889,099.54 = 415,027.67 : x
  2. Step 2: Convert to fraction form
    644,881.37/889,099.54 = 415,027.67/x
  3. Step 3: Cross multiply
    644,881.37x = 889,099.54 × 415,027.67
  4. Step 4: Simplify right side
    644,881.37x = 369,000,905,001.21
  5. Step 5: Solve for x
    x = 369,000,905,001.21/644,881.37
  6. Step 6: Final answer
    x = 572,199.67

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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.