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Finding the Fourth Proportional to 521,673.51, 719,898.62 and 283,209.51

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Solution

The fourth proportional to 521,673.51, 719,898.62 and 283,209.51 is: 390,823.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,673.51 : 719,898.62 = 283,209.51 : x
  2. Step 2: Convert to fraction form
    521,673.51/719,898.62 = 283,209.51/x
  3. Step 3: Cross multiply
    521,673.51x = 719,898.62 × 283,209.51
  4. Step 4: Simplify right side
    521,673.51x = 203,882,134,003.83
  5. Step 5: Solve for x
    x = 203,882,134,003.83/521,673.51
  6. Step 6: Final answer
    x = 390,823.24

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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.