Home / 712,259.96-982,881.40-389,908.36

Finding the Fourth Proportional to 712,259.96, 982,881.40 and 389,908.36

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Solution

The fourth proportional to 712,259.96, 982,881.40 and 389,908.36 is: 538,053.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,259.96 : 982,881.40 = 389,908.36 : x
  2. Step 2: Convert to fraction form
    712,259.96/982,881.40 = 389,908.36/x
  3. Step 3: Cross multiply
    712,259.96x = 982,881.40 × 389,908.36
  4. Step 4: Simplify right side
    712,259.96x = 383,233,674,748.50
  5. Step 5: Solve for x
    x = 383,233,674,748.50/712,259.96
  6. Step 6: Final answer
    x = 538,053.09

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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.