Home / 648,661,980.12-973,118,154.05-211,845,231.15

Finding the Fourth Proportional to 648,661,980.12, 973,118,154.05 and 211,845,231.15

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Solution

The fourth proportional to 648,661,980.12, 973,118,154.05 and 211,845,231.15 is: 317,808,730.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,661,980.12 : 973,118,154.05 = 211,845,231.15 : x
  2. Step 2: Convert to fraction form
    648,661,980.12/973,118,154.05 = 211,845,231.15/x
  3. Step 3: Cross multiply
    648,661,980.12x = 973,118,154.05 × 211,845,231.15
  4. Step 4: Simplify right side
    648,661,980.12x = 206,150,440,280,983,552
  5. Step 5: Solve for x
    x = 206,150,440,280,983,552/648,661,980.12
  6. Step 6: Final answer
    x = 317,808,730.28

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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.