Home / 1,230,784.90-1,845,140.55-639,808.90

Finding the Fourth Proportional to 1,230,784.90, 1,845,140.55 and 639,808.90

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Solution

The fourth proportional to 1,230,784.90, 1,845,140.55 and 639,808.90 is: 959,174.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,784.90 : 1,845,140.55 = 639,808.90 : x
  2. Step 2: Convert to fraction form
    1,230,784.90/1,845,140.55 = 639,808.90/x
  3. Step 3: Cross multiply
    1,230,784.90x = 1,845,140.55 × 639,808.90
  4. Step 4: Simplify right side
    1,230,784.90x = 1,180,537,345,640.90
  5. Step 5: Solve for x
    x = 1,180,537,345,640.90/1,230,784.90
  6. Step 6: Final answer
    x = 959,174.38

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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.