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Finding the Fourth Proportional to 519,722.80, 729,011.60 and 519,722.80

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Solution

The fourth proportional to 519,722.80, 729,011.60 and 519,722.80 is: 729,011.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,722.80 : 729,011.60 = 519,722.80 : x
  2. Step 2: Convert to fraction form
    519,722.80/729,011.60 = 519,722.80/x
  3. Step 3: Cross multiply
    519,722.80x = 729,011.60 × 519,722.80
  4. Step 4: Simplify right side
    519,722.80x = 378,883,949,984.48
  5. Step 5: Solve for x
    x = 378,883,949,984.48/519,722.80
  6. Step 6: Final answer
    x = 729,011.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.