Home / 838,969,421.56-1,258,458,112.68-256,702,738.38

Finding the Fourth Proportional to 838,969,421.56, 1,258,458,112.68 and 256,702,738.38

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Solution

The fourth proportional to 838,969,421.56, 1,258,458,112.68 and 256,702,738.38 is: 385,055,325.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,969,421.56 : 1,258,458,112.68 = 256,702,738.38 : x
  2. Step 2: Convert to fraction form
    838,969,421.56/1,258,458,112.68 = 256,702,738.38/x
  3. Step 3: Cross multiply
    838,969,421.56x = 1,258,458,112.68 × 256,702,738.38
  4. Step 4: Simplify right side
    838,969,421.56x = 323,049,643,661,482,624
  5. Step 5: Solve for x
    x = 323,049,643,661,482,624/838,969,421.56
  6. Step 6: Final answer
    x = 385,055,325.45

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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.