Home / 639,083.01-881,637.34-380,815.02

Finding the Fourth Proportional to 639,083.01, 881,637.34 and 380,815.02

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Solution

The fourth proportional to 639,083.01, 881,637.34 and 380,815.02 is: 525,347.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,083.01 : 881,637.34 = 380,815.02 : x
  2. Step 2: Convert to fraction form
    639,083.01/881,637.34 = 380,815.02/x
  3. Step 3: Cross multiply
    639,083.01x = 881,637.34 × 380,815.02
  4. Step 4: Simplify right side
    639,083.01x = 335,740,739,955.80
  5. Step 5: Solve for x
    x = 335,740,739,955.80/639,083.01
  6. Step 6: Final answer
    x = 525,347.62

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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.