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Finding the Fourth Proportional to 882,990.83, 1,218,529.89 and 501,016.70

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Solution

The fourth proportional to 882,990.83, 1,218,529.89 and 501,016.70 is: 691,404.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    882,990.83 : 1,218,529.89 = 501,016.70 : x
  2. Step 2: Convert to fraction form
    882,990.83/1,218,529.89 = 501,016.70/x
  3. Step 3: Cross multiply
    882,990.83x = 1,218,529.89 × 501,016.70
  4. Step 4: Simplify right side
    882,990.83x = 610,503,818,246.51
  5. Step 5: Solve for x
    x = 610,503,818,246.51/882,990.83
  6. Step 6: Final answer
    x = 691,404.49

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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.