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Finding the Fourth Proportional to 897,368.16, 1,238,368.07 and 489,469.98

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Solution

The fourth proportional to 897,368.16, 1,238,368.07 and 489,469.98 is: 675,468.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,368.16 : 1,238,368.07 = 489,469.98 : x
  2. Step 2: Convert to fraction form
    897,368.16/1,238,368.07 = 489,469.98/x
  3. Step 3: Cross multiply
    897,368.16x = 1,238,368.07 × 489,469.98
  4. Step 4: Simplify right side
    897,368.16x = 606,143,994,455.54
  5. Step 5: Solve for x
    x = 606,143,994,455.54/897,368.16
  6. Step 6: Final answer
    x = 675,468.58

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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.