Home / 1,390,258.40-2,085,387.60-492,713.60

Finding the Fourth Proportional to 1,390,258.40, 2,085,387.60 and 492,713.60

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Solution

The fourth proportional to 1,390,258.40, 2,085,387.60 and 492,713.60 is: 739,070.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,258.40 : 2,085,387.60 = 492,713.60 : x
  2. Step 2: Convert to fraction form
    1,390,258.40/2,085,387.60 = 492,713.60/x
  3. Step 3: Cross multiply
    1,390,258.40x = 2,085,387.60 × 492,713.60
  4. Step 4: Simplify right side
    1,390,258.40x = 1,027,498,831,791.36
  5. Step 5: Solve for x
    x = 1,027,498,831,791.36/1,390,258.40
  6. Step 6: Final answer
    x = 739,070.40

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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.