Home / 1,139,915,014.34-1,710,978,209.78-550,120,317.53

Finding the Fourth Proportional to 1,139,915,014.34, 1,710,978,209.78 and 550,120,317.53

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Solution

The fourth proportional to 1,139,915,014.34, 1,710,978,209.78 and 550,120,317.53 is: 825,714,078.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,915,014.34 : 1,710,978,209.78 = 550,120,317.53 : x
  2. Step 2: Convert to fraction form
    1,139,915,014.34/1,710,978,209.78 = 550,120,317.53/x
  3. Step 3: Cross multiply
    1,139,915,014.34x = 1,710,978,209.78 × 550,120,317.53
  4. Step 4: Simplify right side
    1,139,915,014.34x = 941,243,876,039,779,072
  5. Step 5: Solve for x
    x = 941,243,876,039,779,072/1,139,915,014.34
  6. Step 6: Final answer
    x = 825,714,078.86

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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.