Home / 828,799,515.40-1,243,647,170.70-368,808,680.20

Finding the Fourth Proportional to 828,799,515.40, 1,243,647,170.70 and 368,808,680.20

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Solution

The fourth proportional to 828,799,515.40, 1,243,647,170.70 and 368,808,680.20 is: 553,412,330.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,799,515.40 : 1,243,647,170.70 = 368,808,680.20 : x
  2. Step 2: Convert to fraction form
    828,799,515.40/1,243,647,170.70 = 368,808,680.20/x
  3. Step 3: Cross multiply
    828,799,515.40x = 1,243,647,170.70 × 368,808,680.20
  4. Step 4: Simplify right side
    828,799,515.40x = 458,667,871,660,331,136
  5. Step 5: Solve for x
    x = 458,667,871,660,331,136/828,799,515.40
  6. Step 6: Final answer
    x = 553,412,330.89

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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.