Home / 864,314,857.68-1,296,475,609.08-209,264,792.40

Finding the Fourth Proportional to 864,314,857.68, 1,296,475,609.08 and 209,264,792.40

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Solution

The fourth proportional to 864,314,857.68, 1,296,475,609.08 and 209,264,792.40 is: 313,897,993.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,314,857.68 : 1,296,475,609.08 = 209,264,792.40 : x
  2. Step 2: Convert to fraction form
    864,314,857.68/1,296,475,609.08 = 209,264,792.40/x
  3. Step 3: Cross multiply
    864,314,857.68x = 1,296,475,609.08 × 209,264,792.40
  4. Step 4: Simplify right side
    864,314,857.68x = 271,306,699,185,789,760
  5. Step 5: Solve for x
    x = 271,306,699,185,789,760/864,314,857.68
  6. Step 6: Final answer
    x = 313,897,993.05

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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.