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Finding the Fourth Proportional to 770,630.80, 1,154,563.80 and 660,038.80

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Solution

The fourth proportional to 770,630.80, 1,154,563.80 and 660,038.80 is: 988,874.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,630.80 : 1,154,563.80 = 660,038.80 : x
  2. Step 2: Convert to fraction form
    770,630.80/1,154,563.80 = 660,038.80/x
  3. Step 3: Cross multiply
    770,630.80x = 1,154,563.80 × 660,038.80
  4. Step 4: Simplify right side
    770,630.80x = 762,056,905,075.44
  5. Step 5: Solve for x
    x = 762,056,905,075.44/770,630.80
  6. Step 6: Final answer
    x = 988,874.19

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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.