Home / 1,328,713.20-1,992,810.60-429,937.20

Finding the Fourth Proportional to 1,328,713.20, 1,992,810.60 and 429,937.20

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Solution

The fourth proportional to 1,328,713.20, 1,992,810.60 and 429,937.20 is: 644,821.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,713.20 : 1,992,810.60 = 429,937.20 : x
  2. Step 2: Convert to fraction form
    1,328,713.20/1,992,810.60 = 429,937.20/x
  3. Step 3: Cross multiply
    1,328,713.20x = 1,992,810.60 × 429,937.20
  4. Step 4: Simplify right side
    1,328,713.20x = 856,783,409,494.32
  5. Step 5: Solve for x
    x = 856,783,409,494.32/1,328,713.20
  6. Step 6: Final answer
    x = 644,821.93

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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.