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Finding the Fourth Proportional to 644,843.94, 888,946.74 and 450,648.72

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Solution

The fourth proportional to 644,843.94, 888,946.74 and 450,648.72 is: 621,239.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,843.94 : 888,946.74 = 450,648.72 : x
  2. Step 2: Convert to fraction form
    644,843.94/888,946.74 = 450,648.72/x
  3. Step 3: Cross multiply
    644,843.94x = 888,946.74 × 450,648.72
  4. Step 4: Simplify right side
    644,843.94x = 400,602,710,529.17
  5. Step 5: Solve for x
    x = 400,602,710,529.17/644,843.94
  6. Step 6: Final answer
    x = 621,239.78

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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.