Home / 980,378.70-1,470,276.45-380,994.90

Finding the Fourth Proportional to 980,378.70, 1,470,276.45 and 380,994.90

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Solution

The fourth proportional to 980,378.70, 1,470,276.45 and 380,994.90 is: 571,379.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,378.70 : 1,470,276.45 = 380,994.90 : x
  2. Step 2: Convert to fraction form
    980,378.70/1,470,276.45 = 380,994.90/x
  3. Step 3: Cross multiply
    980,378.70x = 1,470,276.45 × 380,994.90
  4. Step 4: Simplify right side
    980,378.70x = 560,167,829,040.11
  5. Step 5: Solve for x
    x = 560,167,829,040.11/980,378.70
  6. Step 6: Final answer
    x = 571,379.03

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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.