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Finding the Fourth Proportional to 556,652,644.07, 768,159,603.70 and 309,149,941.55

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Solution

The fourth proportional to 556,652,644.07, 768,159,603.70 and 309,149,941.55 is: 426,615,231.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,652,644.07 : 768,159,603.70 = 309,149,941.55 : x
  2. Step 2: Convert to fraction form
    556,652,644.07/768,159,603.70 = 309,149,941.55/x
  3. Step 3: Cross multiply
    556,652,644.07x = 768,159,603.70 × 309,149,941.55
  4. Step 4: Simplify right side
    556,652,644.07x = 237,476,496,580,312,512
  5. Step 5: Solve for x
    x = 237,476,496,580,312,512/556,652,644.07
  6. Step 6: Final answer
    x = 426,615,231.44

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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.