Home / 644,942.53-889,979.56-358,445.17

Finding the Fourth Proportional to 644,942.53, 889,979.56 and 358,445.17

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Solution

The fourth proportional to 644,942.53, 889,979.56 and 358,445.17 is: 494,631.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,942.53 : 889,979.56 = 358,445.17 : x
  2. Step 2: Convert to fraction form
    644,942.53/889,979.56 = 358,445.17/x
  3. Step 3: Cross multiply
    644,942.53x = 889,979.56 × 358,445.17
  4. Step 4: Simplify right side
    644,942.53x = 319,008,874,680.73
  5. Step 5: Solve for x
    x = 319,008,874,680.73/644,942.53
  6. Step 6: Final answer
    x = 494,631.47

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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.