Home / 1,261,388.70-1,742,164.47-918,751.14

Finding the Fourth Proportional to 1,261,388.70, 1,742,164.47 and 918,751.14

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Solution

The fourth proportional to 1,261,388.70, 1,742,164.47 and 918,751.14 is: 1,268,931.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,388.70 : 1,742,164.47 = 918,751.14 : x
  2. Step 2: Convert to fraction form
    1,261,388.70/1,742,164.47 = 918,751.14/x
  3. Step 3: Cross multiply
    1,261,388.70x = 1,742,164.47 × 918,751.14
  4. Step 4: Simplify right side
    1,261,388.70x = 1,600,615,592,880.00
  5. Step 5: Solve for x
    x = 1,600,615,592,880.00/1,261,388.70
  6. Step 6: Final answer
    x = 1,268,931.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.