Home / 644,346.39-889,295.04-463,656.45

Finding the Fourth Proportional to 644,346.39, 889,295.04 and 463,656.45

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Solution

The fourth proportional to 644,346.39, 889,295.04 and 463,656.45 is: 639,915.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,346.39 : 889,295.04 = 463,656.45 : x
  2. Step 2: Convert to fraction form
    644,346.39/889,295.04 = 463,656.45/x
  3. Step 3: Cross multiply
    644,346.39x = 889,295.04 × 463,656.45
  4. Step 4: Simplify right side
    644,346.39x = 412,327,381,249.01
  5. Step 5: Solve for x
    x = 412,327,381,249.01/644,346.39
  6. Step 6: Final answer
    x = 639,915.72

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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.