Home / 521,236,090.59-719,319,851.81-306,669,712.77

Finding the Fourth Proportional to 521,236,090.59, 719,319,851.81 and 306,669,712.77

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Solution

The fourth proportional to 521,236,090.59, 719,319,851.81 and 306,669,712.77 is: 423,212,468.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,236,090.59 : 719,319,851.81 = 306,669,712.77 : x
  2. Step 2: Convert to fraction form
    521,236,090.59/719,319,851.81 = 306,669,712.77/x
  3. Step 3: Cross multiply
    521,236,090.59x = 719,319,851.81 × 306,669,712.77
  4. Step 4: Simplify right side
    521,236,090.59x = 220,593,612,342,798,272
  5. Step 5: Solve for x
    x = 220,593,612,342,798,272/521,236,090.59
  6. Step 6: Final answer
    x = 423,212,468.06

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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.