Home / 1,187,116.11-1,638,300.60-670,690.89

Finding the Fourth Proportional to 1,187,116.11, 1,638,300.60 and 670,690.89

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Solution

The fourth proportional to 1,187,116.11, 1,638,300.60 and 670,690.89 is: 925,598.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,116.11 : 1,638,300.60 = 670,690.89 : x
  2. Step 2: Convert to fraction form
    1,187,116.11/1,638,300.60 = 670,690.89/x
  3. Step 3: Cross multiply
    1,187,116.11x = 1,638,300.60 × 670,690.89
  4. Step 4: Simplify right side
    1,187,116.11x = 1,098,793,287,501.53
  5. Step 5: Solve for x
    x = 1,098,793,287,501.53/1,187,116.11
  6. Step 6: Final answer
    x = 925,598.83

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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.