Home / 785,771,999.70-1,178,657,999.55-325,557,215.70

Finding the Fourth Proportional to 785,771,999.70, 1,178,657,999.55 and 325,557,215.70

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Solution

The fourth proportional to 785,771,999.70, 1,178,657,999.55 and 325,557,215.70 is: 488,335,823.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,771,999.70 : 1,178,657,999.55 = 325,557,215.70 : x
  2. Step 2: Convert to fraction form
    785,771,999.70/1,178,657,999.55 = 325,557,215.70/x
  3. Step 3: Cross multiply
    785,771,999.70x = 1,178,657,999.55 × 325,557,215.70
  4. Step 4: Simplify right side
    785,771,999.70x = 383,720,616,596,029,824
  5. Step 5: Solve for x
    x = 383,720,616,596,029,824/785,771,999.70
  6. Step 6: Final answer
    x = 488,335,823.55

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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.