Home / 521,384.58-719,139.60-478,502.52

Finding the Fourth Proportional to 521,384.58, 719,139.60 and 478,502.52

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Solution

The fourth proportional to 521,384.58, 719,139.60 and 478,502.52 is: 659,992.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,384.58 : 719,139.60 = 478,502.52 : x
  2. Step 2: Convert to fraction form
    521,384.58/719,139.60 = 478,502.52/x
  3. Step 3: Cross multiply
    521,384.58x = 719,139.60 × 478,502.52
  4. Step 4: Simplify right side
    521,384.58x = 344,110,110,831.79
  5. Step 5: Solve for x
    x = 344,110,110,831.79/521,384.58
  6. Step 6: Final answer
    x = 659,992.88

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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.