Home / 1,191,528,022.80-1,787,292,034.20-919,430,230.80

Finding the Fourth Proportional to 1,191,528,022.80, 1,787,292,034.20 and 919,430,230.80

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Solution

The fourth proportional to 1,191,528,022.80, 1,787,292,034.20 and 919,430,230.80 is: 1,379,145,346.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,528,022.80 : 1,787,292,034.20 = 919,430,230.80 : x
  2. Step 2: Convert to fraction form
    1,191,528,022.80/1,787,292,034.20 = 919,430,230.80/x
  3. Step 3: Cross multiply
    1,191,528,022.80x = 1,787,292,034.20 × 919,430,230.80
  4. Step 4: Simplify right side
    1,191,528,022.80x = 1,643,290,327,511,507,456
  5. Step 5: Solve for x
    x = 1,643,290,327,511,507,456/1,191,528,022.80
  6. Step 6: Final answer
    x = 1,379,145,346.20

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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.