Home / 847,324.80-1,270,339.20-426,902.40

Finding the Fourth Proportional to 847,324.80, 1,270,339.20 and 426,902.40

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Solution

The fourth proportional to 847,324.80, 1,270,339.20 and 426,902.40 is: 640,027.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,324.80 : 1,270,339.20 = 426,902.40 : x
  2. Step 2: Convert to fraction form
    847,324.80/1,270,339.20 = 426,902.40/x
  3. Step 3: Cross multiply
    847,324.80x = 1,270,339.20 × 426,902.40
  4. Step 4: Simplify right side
    847,324.80x = 542,310,853,294.08
  5. Step 5: Solve for x
    x = 542,310,853,294.08/847,324.80
  6. Step 6: Final answer
    x = 640,027.12

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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.