Home / 521,221,839.12-780,642,030.60-248,783,924.88

Finding the Fourth Proportional to 521,221,839.12, 780,642,030.60 and 248,783,924.88

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Solution

The fourth proportional to 521,221,839.12, 780,642,030.60 and 248,783,924.88 is: 372,607,541.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,221,839.12 : 780,642,030.60 = 248,783,924.88 : x
  2. Step 2: Convert to fraction form
    521,221,839.12/780,642,030.60 = 248,783,924.88/x
  3. Step 3: Cross multiply
    521,221,839.12x = 780,642,030.60 × 248,783,924.88
  4. Step 4: Simplify right side
    521,221,839.12x = 194,211,188,298,961,056
  5. Step 5: Solve for x
    x = 194,211,188,298,961,056/521,221,839.12
  6. Step 6: Final answer
    x = 372,607,541.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.