Home / 1,120,511,018.34-1,680,993,286.20-393,556,417.38

Finding the Fourth Proportional to 1,120,511,018.34, 1,680,993,286.20 and 393,556,417.38

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Solution

The fourth proportional to 1,120,511,018.34, 1,680,993,286.20 and 393,556,417.38 is: 590,414,270.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,511,018.34 : 1,680,993,286.20 = 393,556,417.38 : x
  2. Step 2: Convert to fraction form
    1,120,511,018.34/1,680,993,286.20 = 393,556,417.38/x
  3. Step 3: Cross multiply
    1,120,511,018.34x = 1,680,993,286.20 × 393,556,417.38
  4. Step 4: Simplify right side
    1,120,511,018.34x = 661,565,695,356,705,024
  5. Step 5: Solve for x
    x = 661,565,695,356,705,024/1,120,511,018.34
  6. Step 6: Final answer
    x = 590,414,270.39

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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.