Home / 1,326,502.88-1,990,038.64-427,996

Finding the Fourth Proportional to 1,326,502.88, 1,990,038.64 and 427,996

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Solution

The fourth proportional to 1,326,502.88, 1,990,038.64 and 427,996 is: 642,085.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,502.88 : 1,990,038.64 = 427,996 : x
  2. Step 2: Convert to fraction form
    1,326,502.88/1,990,038.64 = 427,996/x
  3. Step 3: Cross multiply
    1,326,502.88x = 1,990,038.64 × 427,996
  4. Step 4: Simplify right side
    1,326,502.88x = 851,728,577,765.44
  5. Step 5: Solve for x
    x = 851,728,577,765.44/1,326,502.88
  6. Step 6: Final answer
    x = 642,085.74

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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.