Home / 638,880,921.68-881,655,671.40-345,525,489.68

Finding the Fourth Proportional to 638,880,921.68, 881,655,671.40 and 345,525,489.68

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Solution

The fourth proportional to 638,880,921.68, 881,655,671.40 and 345,525,489.68 is: 476,825,175.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,880,921.68 : 881,655,671.40 = 345,525,489.68 : x
  2. Step 2: Convert to fraction form
    638,880,921.68/881,655,671.40 = 345,525,489.68/x
  3. Step 3: Cross multiply
    638,880,921.68x = 881,655,671.40 × 345,525,489.68
  4. Step 4: Simplify right side
    638,880,921.68x = 304,634,507,589,634,176
  5. Step 5: Solve for x
    x = 304,634,507,589,634,176/638,880,921.68
  6. Step 6: Final answer
    x = 476,825,175.48

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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.