Home / 1,383,732.08-1,909,547.12-780,115.76

Finding the Fourth Proportional to 1,383,732.08, 1,909,547.12 and 780,115.76

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Solution

The fourth proportional to 1,383,732.08, 1,909,547.12 and 780,115.76 is: 1,076,557.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,732.08 : 1,909,547.12 = 780,115.76 : x
  2. Step 2: Convert to fraction form
    1,383,732.08/1,909,547.12 = 780,115.76/x
  3. Step 3: Cross multiply
    1,383,732.08x = 1,909,547.12 × 780,115.76
  4. Step 4: Simplify right side
    1,383,732.08x = 1,489,667,802,774.61
  5. Step 5: Solve for x
    x = 1,489,667,802,774.61/1,383,732.08
  6. Step 6: Final answer
    x = 1,076,557.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.