Home / 687,070.15-1,030,122.33-302,636.56

Finding the Fourth Proportional to 687,070.15, 1,030,122.33 and 302,636.56

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Solution

The fourth proportional to 687,070.15, 1,030,122.33 and 302,636.56 is: 453,742.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,070.15 : 1,030,122.33 = 302,636.56 : x
  2. Step 2: Convert to fraction form
    687,070.15/1,030,122.33 = 302,636.56/x
  3. Step 3: Cross multiply
    687,070.15x = 1,030,122.33 × 302,636.56
  4. Step 4: Simplify right side
    687,070.15x = 311,752,678,330.39
  5. Step 5: Solve for x
    x = 311,752,678,330.39/687,070.15
  6. Step 6: Final answer
    x = 453,742.14

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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.