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Finding the Fourth Proportional to 1,787,329.60, 2,680,994.40 and 1,709,915.20

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Solution

The fourth proportional to 1,787,329.60, 2,680,994.40 and 1,709,915.20 is: 2,564,872.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787,329.60 : 2,680,994.40 = 1,709,915.20 : x
  2. Step 2: Convert to fraction form
    1,787,329.60/2,680,994.40 = 1,709,915.20/x
  3. Step 3: Cross multiply
    1,787,329.60x = 2,680,994.40 × 1,709,915.20
  4. Step 4: Simplify right side
    1,787,329.60x = 4,584,273,075,674.88
  5. Step 5: Solve for x
    x = 4,584,273,075,674.88/1,787,329.60
  6. Step 6: Final answer
    x = 2,564,872.80

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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.