Home / 874,523.20-1,312,015.20-313,499.20

Finding the Fourth Proportional to 874,523.20, 1,312,015.20 and 313,499.20

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Solution

The fourth proportional to 874,523.20, 1,312,015.20 and 313,499.20 is: 470,331.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,523.20 : 1,312,015.20 = 313,499.20 : x
  2. Step 2: Convert to fraction form
    874,523.20/1,312,015.20 = 313,499.20/x
  3. Step 3: Cross multiply
    874,523.20x = 1,312,015.20 × 313,499.20
  4. Step 4: Simplify right side
    874,523.20x = 411,315,715,587.84
  5. Step 5: Solve for x
    x = 411,315,715,587.84/874,523.20
  6. Step 6: Final answer
    x = 470,331.39

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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.