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Finding the Fourth Proportional to 522,043.60, 781,315.80 and 522,043.60

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Solution

The fourth proportional to 522,043.60, 781,315.80 and 522,043.60 is: 781,315.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,043.60 : 781,315.80 = 522,043.60 : x
  2. Step 2: Convert to fraction form
    522,043.60/781,315.80 = 522,043.60/x
  3. Step 3: Cross multiply
    522,043.60x = 781,315.80 × 522,043.60
  4. Step 4: Simplify right side
    522,043.60x = 407,880,912,968.88
  5. Step 5: Solve for x
    x = 407,880,912,968.88/522,043.60
  6. Step 6: Final answer
    x = 781,315.80

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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.