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Finding the Fourth Proportional to 897,516, 1,238,595.48 and 489,624.48

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Solution

The fourth proportional to 897,516, 1,238,595.48 and 489,624.48 is: 675,694.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,516 : 1,238,595.48 = 489,624.48 : x
  2. Step 2: Convert to fraction form
    897,516/1,238,595.48 = 489,624.48/x
  3. Step 3: Cross multiply
    897,516x = 1,238,595.48 × 489,624.48
  4. Step 4: Simplify right side
    897,516x = 606,446,667,825.35
  5. Step 5: Solve for x
    x = 606,446,667,825.35/897,516
  6. Step 6: Final answer
    x = 675,694.55

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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.