Home / 986,631,816.78-1,479,947,732.46-331,582,852.53

Finding the Fourth Proportional to 986,631,816.78, 1,479,947,732.46 and 331,582,852.53

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Solution

The fourth proportional to 986,631,816.78, 1,479,947,732.46 and 331,582,852.53 is: 497,374,281.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,631,816.78 : 1,479,947,732.46 = 331,582,852.53 : x
  2. Step 2: Convert to fraction form
    986,631,816.78/1,479,947,732.46 = 331,582,852.53/x
  3. Step 3: Cross multiply
    986,631,816.78x = 1,479,947,732.46 × 331,582,852.53
  4. Step 4: Simplify right side
    986,631,816.78x = 490,725,290,724,392,064
  5. Step 5: Solve for x
    x = 490,725,290,724,392,064/986,631,816.78
  6. Step 6: Final answer
    x = 497,374,281.24

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1.5x scale

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.