Home / 644,042.88-888,782.40-402,465.84

Finding the Fourth Proportional to 644,042.88, 888,782.40 and 402,465.84

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Solution

The fourth proportional to 644,042.88, 888,782.40 and 402,465.84 is: 555,404.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,042.88 : 888,782.40 = 402,465.84 : x
  2. Step 2: Convert to fraction form
    644,042.88/888,782.40 = 402,465.84/x
  3. Step 3: Cross multiply
    644,042.88x = 888,782.40 × 402,465.84
  4. Step 4: Simplify right side
    644,042.88x = 357,704,555,193.22
  5. Step 5: Solve for x
    x = 357,704,555,193.22/644,042.88
  6. Step 6: Final answer
    x = 555,404.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.