Home / 712,159.96-982,780.67-389,869.06

Finding the Fourth Proportional to 712,159.96, 982,780.67 and 389,869.06

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Solution

The fourth proportional to 712,159.96, 982,780.67 and 389,869.06 is: 538,019.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,159.96 : 982,780.67 = 389,869.06 : x
  2. Step 2: Convert to fraction form
    712,159.96/982,780.67 = 389,869.06/x
  3. Step 3: Cross multiply
    712,159.96x = 982,780.67 × 389,869.06
  4. Step 4: Simplify right side
    712,159.96x = 383,155,775,999.07
  5. Step 5: Solve for x
    x = 383,155,775,999.07/712,159.96
  6. Step 6: Final answer
    x = 538,019.26

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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.