Home / 1,139,699.20-1,709,548.80-1,087,211.20

Finding the Fourth Proportional to 1,139,699.20, 1,709,548.80 and 1,087,211.20

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Solution

The fourth proportional to 1,139,699.20, 1,709,548.80 and 1,087,211.20 is: 1,630,816.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,699.20 : 1,709,548.80 = 1,087,211.20 : x
  2. Step 2: Convert to fraction form
    1,139,699.20/1,709,548.80 = 1,087,211.20/x
  3. Step 3: Cross multiply
    1,139,699.20x = 1,709,548.80 × 1,087,211.20
  4. Step 4: Simplify right side
    1,139,699.20x = 1,858,640,602,306.56
  5. Step 5: Solve for x
    x = 1,858,640,602,306.56/1,139,699.20
  6. Step 6: Final answer
    x = 1,630,816.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.