Home / 830,047.60-1,246,237.80-515,119.60

Finding the Fourth Proportional to 830,047.60, 1,246,237.80 and 515,119.60

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Solution

The fourth proportional to 830,047.60, 1,246,237.80 and 515,119.60 is: 773,403.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,047.60 : 1,246,237.80 = 515,119.60 : x
  2. Step 2: Convert to fraction form
    830,047.60/1,246,237.80 = 515,119.60/x
  3. Step 3: Cross multiply
    830,047.60x = 1,246,237.80 × 515,119.60
  4. Step 4: Simplify right side
    830,047.60x = 641,961,517,040.88
  5. Step 5: Solve for x
    x = 641,961,517,040.88/830,047.60
  6. Step 6: Final answer
    x = 773,403.26

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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.