Home / 783,412.20-1,174,887.90-309,940.20

Finding the Fourth Proportional to 783,412.20, 1,174,887.90 and 309,940.20

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Solution

The fourth proportional to 783,412.20, 1,174,887.90 and 309,940.20 is: 464,819.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,412.20 : 1,174,887.90 = 309,940.20 : x
  2. Step 2: Convert to fraction form
    783,412.20/1,174,887.90 = 309,940.20/x
  3. Step 3: Cross multiply
    783,412.20x = 1,174,887.90 × 309,940.20
  4. Step 4: Simplify right side
    783,412.20x = 364,144,990,703.58
  5. Step 5: Solve for x
    x = 364,144,990,703.58/783,412.20
  6. Step 6: Final answer
    x = 464,819.15

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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.