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Finding the Fourth Proportional to 644,950.48, 889,993.32 and 358,460.68

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Solution

The fourth proportional to 644,950.48, 889,993.32 and 358,460.68 is: 494,654.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,950.48 : 889,993.32 = 358,460.68 : x
  2. Step 2: Convert to fraction form
    644,950.48/889,993.32 = 358,460.68/x
  3. Step 3: Cross multiply
    644,950.48x = 889,993.32 × 358,460.68
  4. Step 4: Simplify right side
    644,950.48x = 319,027,610,682.66
  5. Step 5: Solve for x
    x = 319,027,610,682.66/644,950.48
  6. Step 6: Final answer
    x = 494,654.43

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1.5x scale

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.