Home / 679,210.76-1,019,029.50-280,039.40

Finding the Fourth Proportional to 679,210.76, 1,019,029.50 and 280,039.40

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Solution

The fourth proportional to 679,210.76, 1,019,029.50 and 280,039.40 is: 420,147.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,210.76 : 1,019,029.50 = 280,039.40 : x
  2. Step 2: Convert to fraction form
    679,210.76/1,019,029.50 = 280,039.40/x
  3. Step 3: Cross multiply
    679,210.76x = 1,019,029.50 × 280,039.40
  4. Step 4: Simplify right side
    679,210.76x = 285,368,409,762.30
  5. Step 5: Solve for x
    x = 285,368,409,762.30/679,210.76
  6. Step 6: Final answer
    x = 420,147.07

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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.