Home / 938,878,028.40-1,408,317,042.60-899,071,129.20

Finding the Fourth Proportional to 938,878,028.40, 1,408,317,042.60 and 899,071,129.20

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Solution

The fourth proportional to 938,878,028.40, 1,408,317,042.60 and 899,071,129.20 is: 1,348,606,693.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,878,028.40 : 1,408,317,042.60 = 899,071,129.20 : x
  2. Step 2: Convert to fraction form
    938,878,028.40/1,408,317,042.60 = 899,071,129.20/x
  3. Step 3: Cross multiply
    938,878,028.40x = 1,408,317,042.60 × 899,071,129.20
  4. Step 4: Simplify right side
    938,878,028.40x = 1,266,177,193,761,986,560
  5. Step 5: Solve for x
    x = 1,266,177,193,761,986,560/938,878,028.40
  6. Step 6: Final answer
    x = 1,348,606,693.80

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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.