Home / 782,190,665.60-1,173,285,998.40-770,097,430.40

Finding the Fourth Proportional to 782,190,665.60, 1,173,285,998.40 and 770,097,430.40

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Solution

The fourth proportional to 782,190,665.60, 1,173,285,998.40 and 770,097,430.40 is: 1,155,146,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,190,665.60 : 1,173,285,998.40 = 770,097,430.40 : x
  2. Step 2: Convert to fraction form
    782,190,665.60/1,173,285,998.40 = 770,097,430.40/x
  3. Step 3: Cross multiply
    782,190,665.60x = 1,173,285,998.40 × 770,097,430.40
  4. Step 4: Simplify right side
    782,190,665.60x = 903,544,532,492,138,496
  5. Step 5: Solve for x
    x = 903,544,532,492,138,496/782,190,665.60
  6. Step 6: Final answer
    x = 1,155,146,145.60

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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.