Home / 1,187,000.11-1,638,140.52-670,574.89

Finding the Fourth Proportional to 1,187,000.11, 1,638,140.52 and 670,574.89

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Solution

The fourth proportional to 1,187,000.11, 1,638,140.52 and 670,574.89 is: 925,438.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,000.11 : 1,638,140.52 = 670,574.89 : x
  2. Step 2: Convert to fraction form
    1,187,000.11/1,638,140.52 = 670,574.89/x
  3. Step 3: Cross multiply
    1,187,000.11x = 1,638,140.52 × 670,574.89
  4. Step 4: Simplify right side
    1,187,000.11x = 1,098,495,899,003.54
  5. Step 5: Solve for x
    x = 1,098,495,899,003.54/1,187,000.11
  6. Step 6: Final answer
    x = 925,438.75

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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.