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Finding the Fourth Proportional to 897,536, 1,238,623.12 and 489,644.48

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Solution

The fourth proportional to 897,536, 1,238,623.12 and 489,644.48 is: 675,722.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,536 : 1,238,623.12 = 489,644.48 : x
  2. Step 2: Convert to fraction form
    897,536/1,238,623.12 = 489,644.48/x
  3. Step 3: Cross multiply
    897,536x = 1,238,623.12 × 489,644.48
  4. Step 4: Simplify right side
    897,536x = 606,484,973,508.38
  5. Step 5: Solve for x
    x = 606,484,973,508.38/897,536
  6. Step 6: Final answer
    x = 675,722.17

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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.