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Finding the Fourth Proportional to 897,549.34, 1,238,624.04 and 489,657.64

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Solution

The fourth proportional to 897,549.34, 1,238,624.04 and 489,657.64 is: 675,730.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,549.34 : 1,238,624.04 = 489,657.64 : x
  2. Step 2: Convert to fraction form
    897,549.34/1,238,624.04 = 489,657.64/x
  3. Step 3: Cross multiply
    897,549.34x = 1,238,624.04 × 489,657.64
  4. Step 4: Simplify right side
    897,549.34x = 606,501,724,273.67
  5. Step 5: Solve for x
    x = 606,501,724,273.67/897,549.34
  6. Step 6: Final answer
    x = 675,730.79

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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.