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Finding the Fourth Proportional to 1,821,787.80, 2,732,681.70 and 874,930.20

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Solution

The fourth proportional to 1,821,787.80, 2,732,681.70 and 874,930.20 is: 1,312,395.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821,787.80 : 2,732,681.70 = 874,930.20 : x
  2. Step 2: Convert to fraction form
    1,821,787.80/2,732,681.70 = 874,930.20/x
  3. Step 3: Cross multiply
    1,821,787.80x = 2,732,681.70 × 874,930.20
  4. Step 4: Simplify right side
    1,821,787.80x = 2,390,905,746,317.34
  5. Step 5: Solve for x
    x = 2,390,905,746,317.34/1,821,787.80
  6. Step 6: Final answer
    x = 1,312,395.30

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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.