Home / 999,643.53-1,378,073.23-712,665.39

Finding the Fourth Proportional to 999,643.53, 1,378,073.23 and 712,665.39

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Solution

The fourth proportional to 999,643.53, 1,378,073.23 and 712,665.39 is: 982,455.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,643.53 : 1,378,073.23 = 712,665.39 : x
  2. Step 2: Convert to fraction form
    999,643.53/1,378,073.23 = 712,665.39/x
  3. Step 3: Cross multiply
    999,643.53x = 1,378,073.23 × 712,665.39
  4. Step 4: Simplify right side
    999,643.53x = 982,105,095,906.51
  5. Step 5: Solve for x
    x = 982,105,095,906.51/999,643.53
  6. Step 6: Final answer
    x = 982,455.31

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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.