Home / 644,938.44-889,976.80-358,448.72

Finding the Fourth Proportional to 644,938.44, 889,976.80 and 358,448.72

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Solution

The fourth proportional to 644,938.44, 889,976.80 and 358,448.72 is: 494,637.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,938.44 : 889,976.80 = 358,448.72 : x
  2. Step 2: Convert to fraction form
    644,938.44/889,976.80 = 358,448.72/x
  3. Step 3: Cross multiply
    644,938.44x = 889,976.80 × 358,448.72
  4. Step 4: Simplify right side
    644,938.44x = 319,011,044,789.70
  5. Step 5: Solve for x
    x = 319,011,044,789.70/644,938.44
  6. Step 6: Final answer
    x = 494,637.98

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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.