Home / 1,281,038,904.20-1,917,731,981.10-763,202,793.80

Finding the Fourth Proportional to 1,281,038,904.20, 1,917,731,981.10 and 763,202,793.80

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Solution

The fourth proportional to 1,281,038,904.20, 1,917,731,981.10 and 763,202,793.80 is: 1,142,524,556.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,038,904.20 : 1,917,731,981.10 = 763,202,793.80 : x
  2. Step 2: Convert to fraction form
    1,281,038,904.20/1,917,731,981.10 = 763,202,793.80/x
  3. Step 3: Cross multiply
    1,281,038,904.20x = 1,917,731,981.10 × 763,202,793.80
  4. Step 4: Simplify right side
    1,281,038,904.20x = 1,463,618,405,735,128,576
  5. Step 5: Solve for x
    x = 1,463,618,405,735,128,576/1,281,038,904.20
  6. Step 6: Final answer
    x = 1,142,524,556.39

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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.