Home / 791,235,979.56-1,091,971,018.89-438,925,559.40

Finding the Fourth Proportional to 791,235,979.56, 1,091,971,018.89 and 438,925,559.40

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Solution

The fourth proportional to 791,235,979.56, 1,091,971,018.89 and 438,925,559.40 is: 605,753,533.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,235,979.56 : 1,091,971,018.89 = 438,925,559.40 : x
  2. Step 2: Convert to fraction form
    791,235,979.56/1,091,971,018.89 = 438,925,559.40/x
  3. Step 3: Cross multiply
    791,235,979.56x = 1,091,971,018.89 × 438,925,559.40
  4. Step 4: Simplify right side
    791,235,979.56x = 479,293,990,314,881,216
  5. Step 5: Solve for x
    x = 479,293,990,314,881,216/791,235,979.56
  6. Step 6: Final answer
    x = 605,753,533.33

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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.