Home / 742,079.21-1,024,069.64-419,782.43

Finding the Fourth Proportional to 742,079.21, 1,024,069.64 and 419,782.43

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Solution

The fourth proportional to 742,079.21, 1,024,069.64 and 419,782.43 is: 579,299.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,079.21 : 1,024,069.64 = 419,782.43 : x
  2. Step 2: Convert to fraction form
    742,079.21/1,024,069.64 = 419,782.43/x
  3. Step 3: Cross multiply
    742,079.21x = 1,024,069.64 × 419,782.43
  4. Step 4: Simplify right side
    742,079.21x = 429,886,442,429.69
  5. Step 5: Solve for x
    x = 429,886,442,429.69/742,079.21
  6. Step 6: Final answer
    x = 579,299.94

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1.5x scale

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.