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Finding the Fourth Proportional to 1,920,736.80, 2,877,314.40 and 974,786.40

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Solution

The fourth proportional to 1,920,736.80, 2,877,314.40 and 974,786.40 is: 1,460,255.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920,736.80 : 2,877,314.40 = 974,786.40 : x
  2. Step 2: Convert to fraction form
    1,920,736.80/2,877,314.40 = 974,786.40/x
  3. Step 3: Cross multiply
    1,920,736.80x = 2,877,314.40 × 974,786.40
  4. Step 4: Simplify right side
    1,920,736.80x = 2,804,766,945,644.16
  5. Step 5: Solve for x
    x = 2,804,766,945,644.16/1,920,736.80
  6. Step 6: Final answer
    x = 1,460,255.74

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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.