Home / 830,015.20-1,245,022.80-786,712.60

Finding the Fourth Proportional to 830,015.20, 1,245,022.80 and 786,712.60

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Solution

The fourth proportional to 830,015.20, 1,245,022.80 and 786,712.60 is: 1,180,068.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,015.20 : 1,245,022.80 = 786,712.60 : x
  2. Step 2: Convert to fraction form
    830,015.20/1,245,022.80 = 786,712.60/x
  3. Step 3: Cross multiply
    830,015.20x = 1,245,022.80 × 786,712.60
  4. Step 4: Simplify right side
    830,015.20x = 979,475,124,047.28
  5. Step 5: Solve for x
    x = 979,475,124,047.28/830,015.20
  6. Step 6: Final answer
    x = 1,180,068.90

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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.