Home / 1,299,079,315.20-1,948,618,972.80-329,730,931.20

Finding the Fourth Proportional to 1,299,079,315.20, 1,948,618,972.80 and 329,730,931.20

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Solution

The fourth proportional to 1,299,079,315.20, 1,948,618,972.80 and 329,730,931.20 is: 494,596,396.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,079,315.20 : 1,948,618,972.80 = 329,730,931.20 : x
  2. Step 2: Convert to fraction form
    1,299,079,315.20/1,948,618,972.80 = 329,730,931.20/x
  3. Step 3: Cross multiply
    1,299,079,315.20x = 1,948,618,972.80 × 329,730,931.20
  4. Step 4: Simplify right side
    1,299,079,315.20x = 642,519,948,455,331,456
  5. Step 5: Solve for x
    x = 642,519,948,455,331,456/1,299,079,315.20
  6. Step 6: Final answer
    x = 494,596,396.80

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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.