Home / 645,408,090.40-968,112,135.60-208,707,930.40

Finding the Fourth Proportional to 645,408,090.40, 968,112,135.60 and 208,707,930.40

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Solution

The fourth proportional to 645,408,090.40, 968,112,135.60 and 208,707,930.40 is: 313,061,895.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,408,090.40 : 968,112,135.60 = 208,707,930.40 : x
  2. Step 2: Convert to fraction form
    645,408,090.40/968,112,135.60 = 208,707,930.40/x
  3. Step 3: Cross multiply
    645,408,090.40x = 968,112,135.60 × 208,707,930.40
  4. Step 4: Simplify right side
    645,408,090.40x = 202,052,680,216,200,160
  5. Step 5: Solve for x
    x = 202,052,680,216,200,160/645,408,090.40
  6. Step 6: Final answer
    x = 313,061,895.60

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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.