Home / 772,416,007.20-1,158,624,010.80-287,678,829.60

Finding the Fourth Proportional to 772,416,007.20, 1,158,624,010.80 and 287,678,829.60

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Solution

The fourth proportional to 772,416,007.20, 1,158,624,010.80 and 287,678,829.60 is: 431,518,244.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,416,007.20 : 1,158,624,010.80 = 287,678,829.60 : x
  2. Step 2: Convert to fraction form
    772,416,007.20/1,158,624,010.80 = 287,678,829.60/x
  3. Step 3: Cross multiply
    772,416,007.20x = 1,158,624,010.80 × 287,678,829.60
  4. Step 4: Simplify right side
    772,416,007.20x = 333,311,599,373,401,792
  5. Step 5: Solve for x
    x = 333,311,599,373,401,792/772,416,007.20
  6. Step 6: Final answer
    x = 431,518,244.40

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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.