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Finding the Fourth Proportional to 886,866.80, 1,330,300.20 and 813,383.60

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Solution

The fourth proportional to 886,866.80, 1,330,300.20 and 813,383.60 is: 1,220,075.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,866.80 : 1,330,300.20 = 813,383.60 : x
  2. Step 2: Convert to fraction form
    886,866.80/1,330,300.20 = 813,383.60/x
  3. Step 3: Cross multiply
    886,866.80x = 1,330,300.20 × 813,383.60
  4. Step 4: Simplify right side
    886,866.80x = 1,082,044,365,756.72
  5. Step 5: Solve for x
    x = 1,082,044,365,756.72/886,866.80
  6. Step 6: Final answer
    x = 1,220,075.40

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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.