Home / 872,560.40-1,308,840.60-517,974.80

Finding the Fourth Proportional to 872,560.40, 1,308,840.60 and 517,974.80

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Solution

The fourth proportional to 872,560.40, 1,308,840.60 and 517,974.80 is: 776,962.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,560.40 : 1,308,840.60 = 517,974.80 : x
  2. Step 2: Convert to fraction form
    872,560.40/1,308,840.60 = 517,974.80/x
  3. Step 3: Cross multiply
    872,560.40x = 1,308,840.60 × 517,974.80
  4. Step 4: Simplify right side
    872,560.40x = 677,946,448,016.88
  5. Step 5: Solve for x
    x = 677,946,448,016.88/872,560.40
  6. Step 6: Final answer
    x = 776,962.20

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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.