Home / 556,128,439.20-767,493,190.98-308,609,792.64

Finding the Fourth Proportional to 556,128,439.20, 767,493,190.98 and 308,609,792.64

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Solution

The fourth proportional to 556,128,439.20, 767,493,190.98 and 308,609,792.64 is: 425,901,460.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,128,439.20 : 767,493,190.98 = 308,609,792.64 : x
  2. Step 2: Convert to fraction form
    556,128,439.20/767,493,190.98 = 308,609,792.64/x
  3. Step 3: Cross multiply
    556,128,439.20x = 767,493,190.98 × 308,609,792.64
  4. Step 4: Simplify right side
    556,128,439.20x = 236,855,914,520,949,728
  5. Step 5: Solve for x
    x = 236,855,914,520,949,728/556,128,439.20
  6. Step 6: Final answer
    x = 425,901,460.57

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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.