Home / 414,288,468.80-621,432,703.20-172,423,764.80

Finding the Fourth Proportional to 414,288,468.80, 621,432,703.20 and 172,423,764.80

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Solution

The fourth proportional to 414,288,468.80, 621,432,703.20 and 172,423,764.80 is: 258,635,647.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,288,468.80 : 621,432,703.20 = 172,423,764.80 : x
  2. Step 2: Convert to fraction form
    414,288,468.80/621,432,703.20 = 172,423,764.80/x
  3. Step 3: Cross multiply
    414,288,468.80x = 621,432,703.20 × 172,423,764.80
  4. Step 4: Simplify right side
    414,288,468.80x = 107,149,766,255,585,024
  5. Step 5: Solve for x
    x = 107,149,766,255,585,024/414,288,468.80
  6. Step 6: Final answer
    x = 258,635,647.20

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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.