Home / 999,608.45-1,378,024.83-712,630.31

Finding the Fourth Proportional to 999,608.45, 1,378,024.83 and 712,630.31

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Solution

The fourth proportional to 999,608.45, 1,378,024.83 and 712,630.31 is: 982,406.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,608.45 : 1,378,024.83 = 712,630.31 : x
  2. Step 2: Convert to fraction form
    999,608.45/1,378,024.83 = 712,630.31/x
  3. Step 3: Cross multiply
    999,608.45x = 1,378,024.83 × 712,630.31
  4. Step 4: Simplify right side
    999,608.45x = 982,022,254,900.47
  5. Step 5: Solve for x
    x = 982,022,254,900.47/999,608.45
  6. Step 6: Final answer
    x = 982,406.92

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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.