Home / 1,438,586.09-2,157,878.52-427,703.66

Finding the Fourth Proportional to 1,438,586.09, 2,157,878.52 and 427,703.66

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Solution

The fourth proportional to 1,438,586.09, 2,157,878.52 and 427,703.66 is: 641,555.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,586.09 : 2,157,878.52 = 427,703.66 : x
  2. Step 2: Convert to fraction form
    1,438,586.09/2,157,878.52 = 427,703.66/x
  3. Step 3: Cross multiply
    1,438,586.09x = 2,157,878.52 × 427,703.66
  4. Step 4: Simplify right side
    1,438,586.09x = 922,932,540,839.38
  5. Step 5: Solve for x
    x = 922,932,540,839.38/1,438,586.09
  6. Step 6: Final answer
    x = 641,555.31

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1.5x scale

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.