Home / 1,238,977,830.40-1,858,466,745.60-868,118,617.60

Finding the Fourth Proportional to 1,238,977,830.40, 1,858,466,745.60 and 868,118,617.60

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Solution

The fourth proportional to 1,238,977,830.40, 1,858,466,745.60 and 868,118,617.60 is: 1,302,177,926.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,977,830.40 : 1,858,466,745.60 = 868,118,617.60 : x
  2. Step 2: Convert to fraction form
    1,238,977,830.40/1,858,466,745.60 = 868,118,617.60/x
  3. Step 3: Cross multiply
    1,238,977,830.40x = 1,858,466,745.60 × 868,118,617.60
  4. Step 4: Simplify right side
    1,238,977,830.40x = 1,613,369,582,045,842,944
  5. Step 5: Solve for x
    x = 1,613,369,582,045,842,944/1,238,977,830.40
  6. Step 6: Final answer
    x = 1,302,177,926.40

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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.