Home / 1,189,420.39-1,641,358.39-645,545.23

Finding the Fourth Proportional to 1,189,420.39, 1,641,358.39 and 645,545.23

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Solution

The fourth proportional to 1,189,420.39, 1,641,358.39 and 645,545.23 is: 890,829.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,420.39 : 1,641,358.39 = 645,545.23 : x
  2. Step 2: Convert to fraction form
    1,189,420.39/1,641,358.39 = 645,545.23/x
  3. Step 3: Cross multiply
    1,189,420.39x = 1,641,358.39 × 645,545.23
  4. Step 4: Simplify right side
    1,189,420.39x = 1,059,571,079,384.98
  5. Step 5: Solve for x
    x = 1,059,571,079,384.98/1,189,420.39
  6. Step 6: Final answer
    x = 890,829.76

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Double scale
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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.