Home / 644,962.60-889,800.24-415,502.56

Finding the Fourth Proportional to 644,962.60, 889,800.24 and 415,502.56

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Solution

The fourth proportional to 644,962.60, 889,800.24 and 415,502.56 is: 573,233.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,962.60 : 889,800.24 = 415,502.56 : x
  2. Step 2: Convert to fraction form
    644,962.60/889,800.24 = 415,502.56/x
  3. Step 3: Cross multiply
    644,962.60x = 889,800.24 × 415,502.56
  4. Step 4: Simplify right side
    644,962.60x = 369,714,277,608.61
  5. Step 5: Solve for x
    x = 369,714,277,608.61/644,962.60
  6. Step 6: Final answer
    x = 573,233.67

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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.