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Finding the Fourth Proportional to 886,686.40, 1,330,202.40 and 354,116.80

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Solution

The fourth proportional to 886,686.40, 1,330,202.40 and 354,116.80 is: 531,244.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,686.40 : 1,330,202.40 = 354,116.80 : x
  2. Step 2: Convert to fraction form
    886,686.40/1,330,202.40 = 354,116.80/x
  3. Step 3: Cross multiply
    886,686.40x = 1,330,202.40 × 354,116.80
  4. Step 4: Simplify right side
    886,686.40x = 471,047,017,240.32
  5. Step 5: Solve for x
    x = 471,047,017,240.32/886,686.40
  6. Step 6: Final answer
    x = 531,244.21

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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.