Home / 872,681.31-1,204,202.30-490,699.89

Finding the Fourth Proportional to 872,681.31, 1,204,202.30 and 490,699.89

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Solution

The fourth proportional to 872,681.31, 1,204,202.30 and 490,699.89 is: 677,110.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,681.31 : 1,204,202.30 = 490,699.89 : x
  2. Step 2: Convert to fraction form
    872,681.31/1,204,202.30 = 490,699.89/x
  3. Step 3: Cross multiply
    872,681.31x = 1,204,202.30 × 490,699.89
  4. Step 4: Simplify right side
    872,681.31x = 590,901,933,694.25
  5. Step 5: Solve for x
    x = 590,901,933,694.25/872,681.31
  6. Step 6: Final answer
    x = 677,110.79

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Double scale
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1.5x scale

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.