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Finding the Fourth Proportional to 999,602.62, 1,378,016.83 and 712,624.48

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Solution

The fourth proportional to 999,602.62, 1,378,016.83 and 712,624.48 is: 982,398.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,602.62 : 1,378,016.83 = 712,624.48 : x
  2. Step 2: Convert to fraction form
    999,602.62/1,378,016.83 = 712,624.48/x
  3. Step 3: Cross multiply
    999,602.62x = 1,378,016.83 × 712,624.48
  4. Step 4: Simplify right side
    999,602.62x = 982,008,521,683.40
  5. Step 5: Solve for x
    x = 982,008,521,683.40/999,602.62
  6. Step 6: Final answer
    x = 982,398.91

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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.