Home / 779,369,790.94-1,075,521,749.12-422,128,679.96

Finding the Fourth Proportional to 779,369,790.94, 1,075,521,749.12 and 422,128,679.96

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Solution

The fourth proportional to 779,369,790.94, 1,075,521,749.12 and 422,128,679.96 is: 582,532,940.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,369,790.94 : 1,075,521,749.12 = 422,128,679.96 : x
  2. Step 2: Convert to fraction form
    779,369,790.94/1,075,521,749.12 = 422,128,679.96/x
  3. Step 3: Cross multiply
    779,369,790.94x = 1,075,521,749.12 × 422,128,679.96
  4. Step 4: Simplify right side
    779,369,790.94x = 454,008,576,224,295,808
  5. Step 5: Solve for x
    x = 454,008,576,224,295,808/779,369,790.94
  6. Step 6: Final answer
    x = 582,532,940.72

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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.