Home / 1,187,289.72-1,638,491.40-677,981.16

Finding the Fourth Proportional to 1,187,289.72, 1,638,491.40 and 677,981.16

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Solution

The fourth proportional to 1,187,289.72, 1,638,491.40 and 677,981.16 is: 935,632.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,289.72 : 1,638,491.40 = 677,981.16 : x
  2. Step 2: Convert to fraction form
    1,187,289.72/1,638,491.40 = 677,981.16/x
  3. Step 3: Cross multiply
    1,187,289.72x = 1,638,491.40 × 677,981.16
  4. Step 4: Simplify right side
    1,187,289.72x = 1,110,866,300,022.02
  5. Step 5: Solve for x
    x = 1,110,866,300,022.02/1,187,289.72
  6. Step 6: Final answer
    x = 935,632.04

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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.