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Finding the Fourth Proportional to 882,698.40, 1,323,010.72 and 408,381.92

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Solution

The fourth proportional to 882,698.40, 1,323,010.72 and 408,381.92 is: 612,093.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    882,698.40 : 1,323,010.72 = 408,381.92 : x
  2. Step 2: Convert to fraction form
    882,698.40/1,323,010.72 = 408,381.92/x
  3. Step 3: Cross multiply
    882,698.40x = 1,323,010.72 × 408,381.92
  4. Step 4: Simplify right side
    882,698.40x = 540,293,658,014.18
  5. Step 5: Solve for x
    x = 540,293,658,014.18/882,698.40
  6. Step 6: Final answer
    x = 612,093.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.