Home / 686,739.20-1,030,546.20-402,429.20

Finding the Fourth Proportional to 686,739.20, 1,030,546.20 and 402,429.20

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Solution

The fourth proportional to 686,739.20, 1,030,546.20 and 402,429.20 is: 603,900.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,739.20 : 1,030,546.20 = 402,429.20 : x
  2. Step 2: Convert to fraction form
    686,739.20/1,030,546.20 = 402,429.20/x
  3. Step 3: Cross multiply
    686,739.20x = 1,030,546.20 × 402,429.20
  4. Step 4: Simplify right side
    686,739.20x = 414,721,882,829.04
  5. Step 5: Solve for x
    x = 414,721,882,829.04/686,739.20
  6. Step 6: Final answer
    x = 603,900.12

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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.