Home / 686,808.20-1,030,212.30-307,728.20

Finding the Fourth Proportional to 686,808.20, 1,030,212.30 and 307,728.20

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Solution

The fourth proportional to 686,808.20, 1,030,212.30 and 307,728.20 is: 461,592.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,808.20 : 1,030,212.30 = 307,728.20 : x
  2. Step 2: Convert to fraction form
    686,808.20/1,030,212.30 = 307,728.20/x
  3. Step 3: Cross multiply
    686,808.20x = 1,030,212.30 × 307,728.20
  4. Step 4: Simplify right side
    686,808.20x = 317,025,376,696.86
  5. Step 5: Solve for x
    x = 317,025,376,696.86/686,808.20
  6. Step 6: Final answer
    x = 461,592.30

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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.