Home / 679,898.94-1,019,388.30-380,586.12

Finding the Fourth Proportional to 679,898.94, 1,019,388.30 and 380,586.12

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Solution

The fourth proportional to 679,898.94, 1,019,388.30 and 380,586.12 is: 570,621.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,898.94 : 1,019,388.30 = 380,586.12 : x
  2. Step 2: Convert to fraction form
    679,898.94/1,019,388.30 = 380,586.12/x
  3. Step 3: Cross multiply
    679,898.94x = 1,019,388.30 × 380,586.12
  4. Step 4: Simplify right side
    679,898.94x = 387,965,037,870.40
  5. Step 5: Solve for x
    x = 387,965,037,870.40/679,898.94
  6. Step 6: Final answer
    x = 570,621.62

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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.