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Finding the Fourth Proportional to 886,688.40, 1,330,205.40 and 354,118.80

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Solution

The fourth proportional to 886,688.40, 1,330,205.40 and 354,118.80 is: 531,247.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,688.40 : 1,330,205.40 = 354,118.80 : x
  2. Step 2: Convert to fraction form
    886,688.40/1,330,205.40 = 354,118.80/x
  3. Step 3: Cross multiply
    886,688.40x = 1,330,205.40 × 354,118.80
  4. Step 4: Simplify right side
    886,688.40x = 471,050,740,001.52
  5. Step 5: Solve for x
    x = 471,050,740,001.52/886,688.40
  6. Step 6: Final answer
    x = 531,247.21

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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.