Home / 686,335,629.68-1,029,510,628.82-271,913,312.38

Finding the Fourth Proportional to 686,335,629.68, 1,029,510,628.82 and 271,913,312.38

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Solution

The fourth proportional to 686,335,629.68, 1,029,510,628.82 and 271,913,312.38 is: 407,872,814.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,335,629.68 : 1,029,510,628.82 = 271,913,312.38 : x
  2. Step 2: Convert to fraction form
    686,335,629.68/1,029,510,628.82 = 271,913,312.38/x
  3. Step 3: Cross multiply
    686,335,629.68x = 1,029,510,628.82 × 271,913,312.38
  4. Step 4: Simplify right side
    686,335,629.68x = 279,937,645,206,355,776
  5. Step 5: Solve for x
    x = 279,937,645,206,355,776/686,335,629.68
  6. Step 6: Final answer
    x = 407,872,814.85

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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.