Home / 1,242,697,972.72-1,714,959,560.06-678,219,059.52

Finding the Fourth Proportional to 1,242,697,972.72, 1,714,959,560.06 and 678,219,059.52

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Solution

The fourth proportional to 1,242,697,972.72, 1,714,959,560.06 and 678,219,059.52 is: 935,962,144.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,697,972.72 : 1,714,959,560.06 = 678,219,059.52 : x
  2. Step 2: Convert to fraction form
    1,242,697,972.72/1,714,959,560.06 = 678,219,059.52/x
  3. Step 3: Cross multiply
    1,242,697,972.72x = 1,714,959,560.06 × 678,219,059.52
  4. Step 4: Simplify right side
    1,242,697,972.72x = 1,163,118,259,938,726,144
  5. Step 5: Solve for x
    x = 1,163,118,259,938,726,144/1,242,697,972.72
  6. Step 6: Final answer
    x = 935,962,144.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.