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Finding the Fourth Proportional to 1,868,476.95, 2,578,498.16 and 1,009,037.18

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Solution

The fourth proportional to 1,868,476.95, 2,578,498.16 and 1,009,037.18 is: 1,392,471.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868,476.95 : 2,578,498.16 = 1,009,037.18 : x
  2. Step 2: Convert to fraction form
    1,868,476.95/2,578,498.16 = 1,009,037.18/x
  3. Step 3: Cross multiply
    1,868,476.95x = 2,578,498.16 × 1,009,037.18
  4. Step 4: Simplify right side
    1,868,476.95x = 2,601,800,494,063.91
  5. Step 5: Solve for x
    x = 2,601,800,494,063.91/1,868,476.95
  6. Step 6: Final answer
    x = 1,392,471.28

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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.