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Finding the Fourth Proportional to 1,787,872.40, 2,681,748.48 and 776,994.32

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Solution

The fourth proportional to 1,787,872.40, 2,681,748.48 and 776,994.32 is: 1,165,465.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787,872.40 : 2,681,748.48 = 776,994.32 : x
  2. Step 2: Convert to fraction form
    1,787,872.40/2,681,748.48 = 776,994.32/x
  3. Step 3: Cross multiply
    1,787,872.40x = 2,681,748.48 × 776,994.32
  4. Step 4: Simplify right side
    1,787,872.40x = 2,083,703,336,628.63
  5. Step 5: Solve for x
    x = 2,083,703,336,628.63/1,787,872.40
  6. Step 6: Final answer
    x = 1,165,465.35

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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.