Home / 874,452.20-1,311,678.30-313,543.40

Finding the Fourth Proportional to 874,452.20, 1,311,678.30 and 313,543.40

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Solution

The fourth proportional to 874,452.20, 1,311,678.30 and 313,543.40 is: 470,315.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,452.20 : 1,311,678.30 = 313,543.40 : x
  2. Step 2: Convert to fraction form
    874,452.20/1,311,678.30 = 313,543.40/x
  3. Step 3: Cross multiply
    874,452.20x = 1,311,678.30 × 313,543.40
  4. Step 4: Simplify right side
    874,452.20x = 411,268,073,888.22
  5. Step 5: Solve for x
    x = 411,268,073,888.22/874,452.20
  6. Step 6: Final answer
    x = 470,315.10

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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.