Home / 828,799,638.40-1,243,647,355.20-368,808,803.20

Finding the Fourth Proportional to 828,799,638.40, 1,243,647,355.20 and 368,808,803.20

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Solution

The fourth proportional to 828,799,638.40, 1,243,647,355.20 and 368,808,803.20 is: 553,412,515.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,799,638.40 : 1,243,647,355.20 = 368,808,803.20 : x
  2. Step 2: Convert to fraction form
    828,799,638.40/1,243,647,355.20 = 368,808,803.20/x
  3. Step 3: Cross multiply
    828,799,638.40x = 1,243,647,355.20 × 368,808,803.20
  4. Step 4: Simplify right side
    828,799,638.40x = 458,668,092,674,157,312
  5. Step 5: Solve for x
    x = 458,668,092,674,157,312/828,799,638.40
  6. Step 6: Final answer
    x = 553,412,515.43

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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.