Home / 1,398,027.67-1,929,053.12-786,143.95

Finding the Fourth Proportional to 1,398,027.67, 1,929,053.12 and 786,143.95

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Solution

The fourth proportional to 1,398,027.67, 1,929,053.12 and 786,143.95 is: 1,084,752.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,027.67 : 1,929,053.12 = 786,143.95 : x
  2. Step 2: Convert to fraction form
    1,398,027.67/1,929,053.12 = 786,143.95/x
  3. Step 3: Cross multiply
    1,398,027.67x = 1,929,053.12 × 786,143.95
  4. Step 4: Simplify right side
    1,398,027.67x = 1,516,513,430,763.27
  5. Step 5: Solve for x
    x = 1,516,513,430,763.27/1,398,027.67
  6. Step 6: Final answer
    x = 1,084,752.09

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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.