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Finding the Fourth Proportional to 521,461.71, 719,627.36 and 340,289.55

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Solution

The fourth proportional to 521,461.71, 719,627.36 and 340,289.55 is: 469,606.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,461.71 : 719,627.36 = 340,289.55 : x
  2. Step 2: Convert to fraction form
    521,461.71/719,627.36 = 340,289.55/x
  3. Step 3: Cross multiply
    521,461.71x = 719,627.36 × 340,289.55
  4. Step 4: Simplify right side
    521,461.71x = 244,881,668,800.64
  5. Step 5: Solve for x
    x = 244,881,668,800.64/521,461.71
  6. Step 6: Final answer
    x = 469,606.23

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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.