Home / 681,001.12-939,699.27-390,597.64

Finding the Fourth Proportional to 681,001.12, 939,699.27 and 390,597.64

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Solution

The fourth proportional to 681,001.12, 939,699.27 and 390,597.64 is: 538,977.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,001.12 : 939,699.27 = 390,597.64 : x
  2. Step 2: Convert to fraction form
    681,001.12/939,699.27 = 390,597.64/x
  3. Step 3: Cross multiply
    681,001.12x = 939,699.27 × 390,597.64
  4. Step 4: Simplify right side
    681,001.12x = 367,044,315,218.74
  5. Step 5: Solve for x
    x = 367,044,315,218.74/681,001.12
  6. Step 6: Final answer
    x = 538,977.55

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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.