Home / 512,071,398.47-768,075,211.24-315,372,241.21

Finding the Fourth Proportional to 512,071,398.47, 768,075,211.24 and 315,372,241.21

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Solution

The fourth proportional to 512,071,398.47, 768,075,211.24 and 315,372,241.21 is: 473,038,723.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,071,398.47 : 768,075,211.24 = 315,372,241.21 : x
  2. Step 2: Convert to fraction form
    512,071,398.47/768,075,211.24 = 315,372,241.21/x
  3. Step 3: Cross multiply
    512,071,398.47x = 768,075,211.24 × 315,372,241.21
  4. Step 4: Simplify right side
    512,071,398.47x = 242,229,600,786,224,512
  5. Step 5: Solve for x
    x = 242,229,600,786,224,512/512,071,398.47
  6. Step 6: Final answer
    x = 473,038,723.72

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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.