Home / 840,421,806.60-1,260,821,666.70-258,182,920.20

Finding the Fourth Proportional to 840,421,806.60, 1,260,821,666.70 and 258,182,920.20

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Solution

The fourth proportional to 840,421,806.60, 1,260,821,666.70 and 258,182,920.20 is: 387,332,429.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,421,806.60 : 1,260,821,666.70 = 258,182,920.20 : x
  2. Step 2: Convert to fraction form
    840,421,806.60/1,260,821,666.70 = 258,182,920.20/x
  3. Step 3: Cross multiply
    840,421,806.60x = 1,260,821,666.70 × 258,182,920.20
  4. Step 4: Simplify right side
    840,421,806.60x = 325,522,619,760,037,120
  5. Step 5: Solve for x
    x = 325,522,619,760,037,120/840,421,806.60
  6. Step 6: Final answer
    x = 387,332,429.03

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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.