Home / 1,189,516-1,641,512.64-680,200.96

Finding the Fourth Proportional to 1,189,516, 1,641,512.64 and 680,200.96

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Solution

The fourth proportional to 1,189,516, 1,641,512.64 and 680,200.96 is: 938,666.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,516 : 1,641,512.64 = 680,200.96 : x
  2. Step 2: Convert to fraction form
    1,189,516/1,641,512.64 = 680,200.96/x
  3. Step 3: Cross multiply
    1,189,516x = 1,641,512.64 × 680,200.96
  4. Step 4: Simplify right side
    1,189,516x = 1,116,558,473,580.13
  5. Step 5: Solve for x
    x = 1,116,558,473,580.13/1,189,516
  6. Step 6: Final answer
    x = 938,666.21

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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.