Home / 693,417.60-1,040,126.40-320,169.60

Finding the Fourth Proportional to 693,417.60, 1,040,126.40 and 320,169.60

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Solution

The fourth proportional to 693,417.60, 1,040,126.40 and 320,169.60 is: 480,254.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,417.60 : 1,040,126.40 = 320,169.60 : x
  2. Step 2: Convert to fraction form
    693,417.60/1,040,126.40 = 320,169.60/x
  3. Step 3: Cross multiply
    693,417.60x = 1,040,126.40 × 320,169.60
  4. Step 4: Simplify right side
    693,417.60x = 333,016,853,437.44
  5. Step 5: Solve for x
    x = 333,016,853,437.44/693,417.60
  6. Step 6: Final answer
    x = 480,254.40

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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.