Home / 1,390,687,669.35-1,919,148,544.60-764,196,453.60

Finding the Fourth Proportional to 1,390,687,669.35, 1,919,148,544.60 and 764,196,453.60

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Solution

The fourth proportional to 1,390,687,669.35, 1,919,148,544.60 and 764,196,453.60 is: 1,054,590,864.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,687,669.35 : 1,919,148,544.60 = 764,196,453.60 : x
  2. Step 2: Convert to fraction form
    1,390,687,669.35/1,919,148,544.60 = 764,196,453.60/x
  3. Step 3: Cross multiply
    1,390,687,669.35x = 1,919,148,544.60 × 764,196,453.60
  4. Step 4: Simplify right side
    1,390,687,669.35x = 1,466,606,511,714,921,472
  5. Step 5: Solve for x
    x = 1,466,606,511,714,921,472/1,390,687,669.35
  6. Step 6: Final answer
    x = 1,054,590,864.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.