Home / 980,404.20-1,470,314.70-381,020.40

Finding the Fourth Proportional to 980,404.20, 1,470,314.70 and 381,020.40

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Solution

The fourth proportional to 980,404.20, 1,470,314.70 and 381,020.40 is: 571,417.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,404.20 : 1,470,314.70 = 381,020.40 : x
  2. Step 2: Convert to fraction form
    980,404.20/1,470,314.70 = 381,020.40/x
  3. Step 3: Cross multiply
    980,404.20x = 1,470,314.70 × 381,020.40
  4. Step 4: Simplify right side
    980,404.20x = 560,219,895,119.88
  5. Step 5: Solve for x
    x = 560,219,895,119.88/980,404.20
  6. Step 6: Final answer
    x = 571,417.27

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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.