Home / 980,383.20-1,470,283.20-380,999.40

Finding the Fourth Proportional to 980,383.20, 1,470,283.20 and 380,999.40

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Solution

The fourth proportional to 980,383.20, 1,470,283.20 and 380,999.40 is: 571,385.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,383.20 : 1,470,283.20 = 380,999.40 : x
  2. Step 2: Convert to fraction form
    980,383.20/1,470,283.20 = 380,999.40/x
  3. Step 3: Cross multiply
    980,383.20x = 1,470,283.20 × 380,999.40
  4. Step 4: Simplify right side
    980,383.20x = 560,177,017,030.08
  5. Step 5: Solve for x
    x = 560,177,017,030.08/980,383.20
  6. Step 6: Final answer
    x = 571,385.78

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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.