Home / 999,601.86-1,378,015.79-712,623.72

Finding the Fourth Proportional to 999,601.86, 1,378,015.79 and 712,623.72

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Solution

The fourth proportional to 999,601.86, 1,378,015.79 and 712,623.72 is: 982,397.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,601.86 : 1,378,015.79 = 712,623.72 : x
  2. Step 2: Convert to fraction form
    999,601.86/1,378,015.79 = 712,623.72/x
  3. Step 3: Cross multiply
    999,601.86x = 1,378,015.79 × 712,623.72
  4. Step 4: Simplify right side
    999,601.86x = 982,006,744,101.49
  5. Step 5: Solve for x
    x = 982,006,744,101.49/999,601.86
  6. Step 6: Final answer
    x = 982,397.87

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1.5x scale

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.