Home / 1,390,390.40-2,086,276.80-548,969.60

Finding the Fourth Proportional to 1,390,390.40, 2,086,276.80 and 548,969.60

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Solution

The fourth proportional to 1,390,390.40, 2,086,276.80 and 548,969.60 is: 823,727.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,390.40 : 2,086,276.80 = 548,969.60 : x
  2. Step 2: Convert to fraction form
    1,390,390.40/2,086,276.80 = 548,969.60/x
  3. Step 3: Cross multiply
    1,390,390.40x = 2,086,276.80 × 548,969.60
  4. Step 4: Simplify right side
    1,390,390.40x = 1,145,302,540,385.28
  5. Step 5: Solve for x
    x = 1,145,302,540,385.28/1,390,390.40
  6. Step 6: Final answer
    x = 823,727.31

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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.