Home / 645,408,088.40-968,112,132.60-208,707,928.40

Finding the Fourth Proportional to 645,408,088.40, 968,112,132.60 and 208,707,928.40

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Solution

The fourth proportional to 645,408,088.40, 968,112,132.60 and 208,707,928.40 is: 313,061,892.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,408,088.40 : 968,112,132.60 = 208,707,928.40 : x
  2. Step 2: Convert to fraction form
    645,408,088.40/968,112,132.60 = 208,707,928.40/x
  3. Step 3: Cross multiply
    645,408,088.40x = 968,112,132.60 × 208,707,928.40
  4. Step 4: Simplify right side
    645,408,088.40x = 202,052,677,653,852,128
  5. Step 5: Solve for x
    x = 202,052,677,653,852,128/645,408,088.40
  6. Step 6: Final answer
    x = 313,061,892.60

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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.