Home / 641,354,540.80-962,031,811.20-318,868,268.80

Finding the Fourth Proportional to 641,354,540.80, 962,031,811.20 and 318,868,268.80

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Solution

The fourth proportional to 641,354,540.80, 962,031,811.20 and 318,868,268.80 is: 478,302,403.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,354,540.80 : 962,031,811.20 = 318,868,268.80 : x
  2. Step 2: Convert to fraction form
    641,354,540.80/962,031,811.20 = 318,868,268.80/x
  3. Step 3: Cross multiply
    641,354,540.80x = 962,031,811.20 × 318,868,268.80
  4. Step 4: Simplify right side
    641,354,540.80x = 306,761,418,167,872,448
  5. Step 5: Solve for x
    x = 306,761,418,167,872,448/641,354,540.80
  6. Step 6: Final answer
    x = 478,302,403.20

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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.