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Finding the Fourth Proportional to 872,133.60, 1,308,200.40 and 819,602.40

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Solution

The fourth proportional to 872,133.60, 1,308,200.40 and 819,602.40 is: 1,229,403.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,133.60 : 1,308,200.40 = 819,602.40 : x
  2. Step 2: Convert to fraction form
    872,133.60/1,308,200.40 = 819,602.40/x
  3. Step 3: Cross multiply
    872,133.60x = 1,308,200.40 × 819,602.40
  4. Step 4: Simplify right side
    872,133.60x = 1,072,204,187,520.96
  5. Step 5: Solve for x
    x = 1,072,204,187,520.96/872,133.60
  6. Step 6: Final answer
    x = 1,229,403.60

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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.