Home / 644,330.47-889,187.04-353,954.28

Finding the Fourth Proportional to 644,330.47, 889,187.04 and 353,954.28

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Solution

The fourth proportional to 644,330.47, 889,187.04 and 353,954.28 is: 488,462.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,330.47 : 889,187.04 = 353,954.28 : x
  2. Step 2: Convert to fraction form
    644,330.47/889,187.04 = 353,954.28/x
  3. Step 3: Cross multiply
    644,330.47x = 889,187.04 × 353,954.28
  4. Step 4: Simplify right side
    644,330.47x = 314,731,558,528.53
  5. Step 5: Solve for x
    x = 314,731,558,528.53/644,330.47
  6. Step 6: Final answer
    x = 488,462.94

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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.