Home / 687,085.65-1,030,145.60-302,652.09

Finding the Fourth Proportional to 687,085.65, 1,030,145.60 and 302,652.09

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Solution

The fourth proportional to 687,085.65, 1,030,145.60 and 302,652.09 is: 453,765.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,085.65 : 1,030,145.60 = 302,652.09 : x
  2. Step 2: Convert to fraction form
    687,085.65/1,030,145.60 = 302,652.09/x
  3. Step 3: Cross multiply
    687,085.65x = 1,030,145.60 × 302,652.09
  4. Step 4: Simplify right side
    687,085.65x = 311,775,719,600.93
  5. Step 5: Solve for x
    x = 311,775,719,600.93/687,085.65
  6. Step 6: Final answer
    x = 453,765.44

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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.