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Finding the Fourth Proportional to 1,868,552.94, 2,578,603.16 and 1,009,113.17

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Solution

The fourth proportional to 1,868,552.94, 2,578,603.16 and 1,009,113.17 is: 1,392,576.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868,552.94 : 2,578,603.16 = 1,009,113.17 : x
  2. Step 2: Convert to fraction form
    1,868,552.94/2,578,603.16 = 1,009,113.17/x
  3. Step 3: Cross multiply
    1,868,552.94x = 2,578,603.16 × 1,009,113.17
  4. Step 4: Simplify right side
    1,868,552.94x = 2,602,102,410,360.56
  5. Step 5: Solve for x
    x = 2,602,102,410,360.56/1,868,552.94
  6. Step 6: Final answer
    x = 1,392,576.23

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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.