Home / 839,809,647.20-1,259,714,470.80-788,791,311.20

Finding the Fourth Proportional to 839,809,647.20, 1,259,714,470.80 and 788,791,311.20

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Solution

The fourth proportional to 839,809,647.20, 1,259,714,470.80 and 788,791,311.20 is: 1,183,186,966.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,809,647.20 : 1,259,714,470.80 = 788,791,311.20 : x
  2. Step 2: Convert to fraction form
    839,809,647.20/1,259,714,470.80 = 788,791,311.20/x
  3. Step 3: Cross multiply
    839,809,647.20x = 1,259,714,470.80 × 788,791,311.20
  4. Step 4: Simplify right side
    839,809,647.20x = 993,651,829,159,946,112
  5. Step 5: Solve for x
    x = 993,651,829,159,946,112/839,809,647.20
  6. Step 6: Final answer
    x = 1,183,186,966.80

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Double scale
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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.