Home / 1,289,341.72-1,777,856.70-881,509.72

Finding the Fourth Proportional to 1,289,341.72, 1,777,856.70 and 881,509.72

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Solution

The fourth proportional to 1,289,341.72, 1,777,856.70 and 881,509.72 is: 1,215,502.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,341.72 : 1,777,856.70 = 881,509.72 : x
  2. Step 2: Convert to fraction form
    1,289,341.72/1,777,856.70 = 881,509.72/x
  3. Step 3: Cross multiply
    1,289,341.72x = 1,777,856.70 × 881,509.72
  4. Step 4: Simplify right side
    1,289,341.72x = 1,567,197,961,817.12
  5. Step 5: Solve for x
    x = 1,567,197,961,817.12/1,289,341.72
  6. Step 6: Final answer
    x = 1,215,502.41

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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.