Home / 989,781,393.39-1,485,969,636.66-663,715,933.89

Finding the Fourth Proportional to 989,781,393.39, 1,485,969,636.66 and 663,715,933.89

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Solution

The fourth proportional to 989,781,393.39, 1,485,969,636.66 and 663,715,933.89 is: 996,443,994.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,781,393.39 : 1,485,969,636.66 = 663,715,933.89 : x
  2. Step 2: Convert to fraction form
    989,781,393.39/1,485,969,636.66 = 663,715,933.89/x
  3. Step 3: Cross multiply
    989,781,393.39x = 1,485,969,636.66 × 663,715,933.89
  4. Step 4: Simplify right side
    989,781,393.39x = 986,261,725,127,975,936
  5. Step 5: Solve for x
    x = 986,261,725,127,975,936/989,781,393.39
  6. Step 6: Final answer
    x = 996,443,994.31

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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.