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Finding the Fourth Proportional to 644,499.58, 889,384.70 and 358,037.68

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Solution

The fourth proportional to 644,499.58, 889,384.70 and 358,037.68 is: 494,078.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,499.58 : 889,384.70 = 358,037.68 : x
  2. Step 2: Convert to fraction form
    644,499.58/889,384.70 = 358,037.68/x
  3. Step 3: Cross multiply
    644,499.58x = 889,384.70 × 358,037.68
  4. Step 4: Simplify right side
    644,499.58x = 318,433,234,615.50
  5. Step 5: Solve for x
    x = 318,433,234,615.50/644,499.58
  6. Step 6: Final answer
    x = 494,078.27

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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.