Home / 1,292,171.92-1,938,356.28-393,690.36

Finding the Fourth Proportional to 1,292,171.92, 1,938,356.28 and 393,690.36

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Solution

The fourth proportional to 1,292,171.92, 1,938,356.28 and 393,690.36 is: 590,565.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,171.92 : 1,938,356.28 = 393,690.36 : x
  2. Step 2: Convert to fraction form
    1,292,171.92/1,938,356.28 = 393,690.36/x
  3. Step 3: Cross multiply
    1,292,171.92x = 1,938,356.28 × 393,690.36
  4. Step 4: Simplify right side
    1,292,171.92x = 763,112,181,681.46
  5. Step 5: Solve for x
    x = 763,112,181,681.46/1,292,171.92
  6. Step 6: Final answer
    x = 590,565.52

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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.