Home / 1,289,512.91-1,779,446.43-716,518.91

Finding the Fourth Proportional to 1,289,512.91, 1,779,446.43 and 716,518.91

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Solution

The fourth proportional to 1,289,512.91, 1,779,446.43 and 716,518.91 is: 988,750.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,512.91 : 1,779,446.43 = 716,518.91 : x
  2. Step 2: Convert to fraction form
    1,289,512.91/1,779,446.43 = 716,518.91/x
  3. Step 3: Cross multiply
    1,289,512.91x = 1,779,446.43 × 716,518.91
  4. Step 4: Simplify right side
    1,289,512.91x = 1,275,007,007,529.76
  5. Step 5: Solve for x
    x = 1,275,007,007,529.76/1,289,512.91
  6. Step 6: Final answer
    x = 988,750.87

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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.