Home / 1,256,315.16-1,883,756.70-857,438.76

Finding the Fourth Proportional to 1,256,315.16, 1,883,756.70 and 857,438.76

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Solution

The fourth proportional to 1,256,315.16, 1,883,756.70 and 857,438.76 is: 1,285,669.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256,315.16 : 1,883,756.70 = 857,438.76 : x
  2. Step 2: Convert to fraction form
    1,256,315.16/1,883,756.70 = 857,438.76/x
  3. Step 3: Cross multiply
    1,256,315.16x = 1,883,756.70 × 857,438.76
  4. Step 4: Simplify right side
    1,256,315.16x = 1,615,206,008,989.69
  5. Step 5: Solve for x
    x = 1,615,206,008,989.69/1,256,315.16
  6. Step 6: Final answer
    x = 1,285,669.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.