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Finding the Fourth Proportional to 1,242,697,973.22, 1,714,959,560.75 and 678,219,060.02

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Solution

The fourth proportional to 1,242,697,973.22, 1,714,959,560.75 and 678,219,060.02 is: 935,962,145.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,697,973.22 : 1,714,959,560.75 = 678,219,060.02 : x
  2. Step 2: Convert to fraction form
    1,242,697,973.22/1,714,959,560.75 = 678,219,060.02/x
  3. Step 3: Cross multiply
    1,242,697,973.22x = 1,714,959,560.75 × 678,219,060.02
  4. Step 4: Simplify right side
    1,242,697,973.22x = 1,163,118,261,252,211,200
  5. Step 5: Solve for x
    x = 1,163,118,261,252,211,200/1,242,697,973.22
  6. Step 6: Final answer
    x = 935,962,145.52

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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.