Home / 840,258,640.80-1,260,575,345.52-258,051,642.48

Finding the Fourth Proportional to 840,258,640.80, 1,260,575,345.52 and 258,051,642.48

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Solution

The fourth proportional to 840,258,640.80, 1,260,575,345.52 and 258,051,642.48 is: 387,135,011.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,258,640.80 : 1,260,575,345.52 = 258,051,642.48 : x
  2. Step 2: Convert to fraction form
    840,258,640.80/1,260,575,345.52 = 258,051,642.48/x
  3. Step 3: Cross multiply
    840,258,640.80x = 1,260,575,345.52 × 258,051,642.48
  4. Step 4: Simplify right side
    840,258,640.80x = 325,293,538,381,229,504
  5. Step 5: Solve for x
    x = 325,293,538,381,229,504/840,258,640.80
  6. Step 6: Final answer
    x = 387,135,011.28

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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.