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Finding the Fourth Proportional to 872,235.60, 1,308,353.40 and 451,640.40

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Solution

The fourth proportional to 872,235.60, 1,308,353.40 and 451,640.40 is: 677,460.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,235.60 : 1,308,353.40 = 451,640.40 : x
  2. Step 2: Convert to fraction form
    872,235.60/1,308,353.40 = 451,640.40/x
  3. Step 3: Cross multiply
    872,235.60x = 1,308,353.40 × 451,640.40
  4. Step 4: Simplify right side
    872,235.60x = 590,905,252,917.36
  5. Step 5: Solve for x
    x = 590,905,252,917.36/872,235.60
  6. Step 6: Final answer
    x = 677,460.60

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1.5x scale

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.