Home / 1,109,270.39-1,664,089.55-389,425.28

Finding the Fourth Proportional to 1,109,270.39, 1,664,089.55 and 389,425.28

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Solution

The fourth proportional to 1,109,270.39, 1,664,089.55 and 389,425.28 is: 584,202.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,109,270.39 : 1,664,089.55 = 389,425.28 : x
  2. Step 2: Convert to fraction form
    1,109,270.39/1,664,089.55 = 389,425.28/x
  3. Step 3: Cross multiply
    1,109,270.39x = 1,664,089.55 × 389,425.28
  4. Step 4: Simplify right side
    1,109,270.39x = 648,038,530,146.60
  5. Step 5: Solve for x
    x = 648,038,530,146.60/1,109,270.39
  6. Step 6: Final answer
    x = 584,202.50

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Double scale
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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.