Home / 638,871,380.88-881,643,093.48-345,515,948.88

Finding the Fourth Proportional to 638,871,380.88, 881,643,093.48 and 345,515,948.88

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Solution

The fourth proportional to 638,871,380.88, 881,643,093.48 and 345,515,948.88 is: 476,812,327.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,871,380.88 : 881,643,093.48 = 345,515,948.88 : x
  2. Step 2: Convert to fraction form
    638,871,380.88/881,643,093.48 = 345,515,948.88/x
  3. Step 3: Cross multiply
    638,871,380.88x = 881,643,093.48 × 345,515,948.88
  4. Step 4: Simplify right side
    638,871,380.88x = 304,621,750,017,240,768
  5. Step 5: Solve for x
    x = 304,621,750,017,240,768/638,871,380.88
  6. Step 6: Final answer
    x = 476,812,327.39

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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.