Home / 1,319,081,527.70-1,978,622,291.55-457,438,519.70

Finding the Fourth Proportional to 1,319,081,527.70, 1,978,622,291.55 and 457,438,519.70

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Solution

The fourth proportional to 1,319,081,527.70, 1,978,622,291.55 and 457,438,519.70 is: 686,157,779.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,081,527.70 : 1,978,622,291.55 = 457,438,519.70 : x
  2. Step 2: Convert to fraction form
    1,319,081,527.70/1,978,622,291.55 = 457,438,519.70/x
  3. Step 3: Cross multiply
    1,319,081,527.70x = 1,978,622,291.55 × 457,438,519.70
  4. Step 4: Simplify right side
    1,319,081,527.70x = 905,098,052,092,053,760
  5. Step 5: Solve for x
    x = 905,098,052,092,053,760/1,319,081,527.70
  6. Step 6: Final answer
    x = 686,157,779.55

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Double scale
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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.