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Finding the Fourth Proportional to 531,056.80, 798,140.40 and 521,725.60

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Solution

The fourth proportional to 531,056.80, 798,140.40 and 521,725.60 is: 784,116.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,056.80 : 798,140.40 = 521,725.60 : x
  2. Step 2: Convert to fraction form
    531,056.80/798,140.40 = 521,725.60/x
  3. Step 3: Cross multiply
    531,056.80x = 798,140.40 × 521,725.60
  4. Step 4: Simplify right side
    531,056.80x = 416,410,279,074.24
  5. Step 5: Solve for x
    x = 416,410,279,074.24/531,056.80
  6. Step 6: Final answer
    x = 784,116.27

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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.