Home / 512,071,399.47-768,075,212.74-315,372,242.21

Finding the Fourth Proportional to 512,071,399.47, 768,075,212.74 and 315,372,242.21

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Solution

The fourth proportional to 512,071,399.47, 768,075,212.74 and 315,372,242.21 is: 473,038,725.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,071,399.47 : 768,075,212.74 = 315,372,242.21 : x
  2. Step 2: Convert to fraction form
    512,071,399.47/768,075,212.74 = 315,372,242.21/x
  3. Step 3: Cross multiply
    512,071,399.47x = 768,075,212.74 × 315,372,242.21
  4. Step 4: Simplify right side
    512,071,399.47x = 242,229,602,027,736,544
  5. Step 5: Solve for x
    x = 242,229,602,027,736,544/512,071,399.47
  6. Step 6: Final answer
    x = 473,038,725.22

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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.