Home / 1,383,728.20-1,909,462.54-802,906.36

Finding the Fourth Proportional to 1,383,728.20, 1,909,462.54 and 802,906.36

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Solution

The fourth proportional to 1,383,728.20, 1,909,462.54 and 802,906.36 is: 1,107,962.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,728.20 : 1,909,462.54 = 802,906.36 : x
  2. Step 2: Convert to fraction form
    1,383,728.20/1,909,462.54 = 802,906.36/x
  3. Step 3: Cross multiply
    1,383,728.20x = 1,909,462.54 × 802,906.36
  4. Step 4: Simplify right side
    1,383,728.20x = 1,533,119,617,547.75
  5. Step 5: Solve for x
    x = 1,533,119,617,547.75/1,383,728.20
  6. Step 6: Final answer
    x = 1,107,962.98

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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.