Home / 839,109.60-1,258,664.40-240,090.30

Finding the Fourth Proportional to 839,109.60, 1,258,664.40 and 240,090.30

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Solution

The fourth proportional to 839,109.60, 1,258,664.40 and 240,090.30 is: 360,135.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,109.60 : 1,258,664.40 = 240,090.30 : x
  2. Step 2: Convert to fraction form
    839,109.60/1,258,664.40 = 240,090.30/x
  3. Step 3: Cross multiply
    839,109.60x = 1,258,664.40 × 240,090.30
  4. Step 4: Simplify right side
    839,109.60x = 302,193,113,395.32
  5. Step 5: Solve for x
    x = 302,193,113,395.32/839,109.60
  6. Step 6: Final answer
    x = 360,135.45

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Double scale
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Similar ratio
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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.