Home / 763,625.35-1,145,431.50-308,209.60

Finding the Fourth Proportional to 763,625.35, 1,145,431.50 and 308,209.60

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Solution

The fourth proportional to 763,625.35, 1,145,431.50 and 308,209.60 is: 462,311.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,625.35 : 1,145,431.50 = 308,209.60 : x
  2. Step 2: Convert to fraction form
    763,625.35/1,145,431.50 = 308,209.60/x
  3. Step 3: Cross multiply
    763,625.35x = 1,145,431.50 × 308,209.60
  4. Step 4: Simplify right side
    763,625.35x = 353,032,984,442.40
  5. Step 5: Solve for x
    x = 353,032,984,442.40/763,625.35
  6. Step 6: Final answer
    x = 462,311.77

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1.5x scale

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.