Home / 1,386,042.72-2,079,141.84-388,848.48

Finding the Fourth Proportional to 1,386,042.72, 2,079,141.84 and 388,848.48

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Solution

The fourth proportional to 1,386,042.72, 2,079,141.84 and 388,848.48 is: 583,294.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,042.72 : 2,079,141.84 = 388,848.48 : x
  2. Step 2: Convert to fraction form
    1,386,042.72/2,079,141.84 = 388,848.48/x
  3. Step 3: Cross multiply
    1,386,042.72x = 2,079,141.84 × 388,848.48
  4. Step 4: Simplify right side
    1,386,042.72x = 808,471,144,188.40
  5. Step 5: Solve for x
    x = 808,471,144,188.40/1,386,042.72
  6. Step 6: Final answer
    x = 583,294.54

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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.