Home / 847,328.80-1,270,345.20-426,906.40

Finding the Fourth Proportional to 847,328.80, 1,270,345.20 and 426,906.40

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Solution

The fourth proportional to 847,328.80, 1,270,345.20 and 426,906.40 is: 640,033.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,328.80 : 1,270,345.20 = 426,906.40 : x
  2. Step 2: Convert to fraction form
    847,328.80/1,270,345.20 = 426,906.40/x
  3. Step 3: Cross multiply
    847,328.80x = 1,270,345.20 × 426,906.40
  4. Step 4: Simplify right side
    847,328.80x = 542,318,496,089.28
  5. Step 5: Solve for x
    x = 542,318,496,089.28/847,328.80
  6. Step 6: Final answer
    x = 640,033.12

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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.