Home / 1,276,968,836.54-1,914,533,968.47-784,664,972.45

Finding the Fourth Proportional to 1,276,968,836.54, 1,914,533,968.47 and 784,664,972.45

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Solution

The fourth proportional to 1,276,968,836.54, 1,914,533,968.47 and 784,664,972.45 is: 1,176,432,580.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,968,836.54 : 1,914,533,968.47 = 784,664,972.45 : x
  2. Step 2: Convert to fraction form
    1,276,968,836.54/1,914,533,968.47 = 784,664,972.45/x
  3. Step 3: Cross multiply
    1,276,968,836.54x = 1,914,533,968.47 × 784,664,972.45
  4. Step 4: Simplify right side
    1,276,968,836.54x = 1,502,267,743,624,101,888
  5. Step 5: Solve for x
    x = 1,502,267,743,624,101,888/1,276,968,836.54
  6. Step 6: Final answer
    x = 1,176,432,580.53

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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.