Home / 1,681,852.11-2,320,921.40-917,905.47

Finding the Fourth Proportional to 1,681,852.11, 2,320,921.40 and 917,905.47

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Solution

The fourth proportional to 1,681,852.11, 2,320,921.40 and 917,905.47 is: 1,266,690.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681,852.11 : 2,320,921.40 = 917,905.47 : x
  2. Step 2: Convert to fraction form
    1,681,852.11/2,320,921.40 = 917,905.47/x
  3. Step 3: Cross multiply
    1,681,852.11x = 2,320,921.40 × 917,905.47
  4. Step 4: Simplify right side
    1,681,852.11x = 2,130,386,443,910.53
  5. Step 5: Solve for x
    x = 2,130,386,443,910.53/1,681,852.11
  6. Step 6: Final answer
    x = 1,266,690.71

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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.