Home / 742,660.28-1,112,071.87-512,559.29

Finding the Fourth Proportional to 742,660.28, 1,112,071.87 and 512,559.29

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Solution

The fourth proportional to 742,660.28, 1,112,071.87 and 512,559.29 is: 767,514.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,660.28 : 1,112,071.87 = 512,559.29 : x
  2. Step 2: Convert to fraction form
    742,660.28/1,112,071.87 = 512,559.29/x
  3. Step 3: Cross multiply
    742,660.28x = 1,112,071.87 × 512,559.29
  4. Step 4: Simplify right side
    742,660.28x = 570,002,765,281.65
  5. Step 5: Solve for x
    x = 570,002,765,281.65/742,660.28
  6. Step 6: Final answer
    x = 767,514.81

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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.