Home / 686,758.20-1,030,574.70-402,448.20

Finding the Fourth Proportional to 686,758.20, 1,030,574.70 and 402,448.20

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Solution

The fourth proportional to 686,758.20, 1,030,574.70 and 402,448.20 is: 603,928.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,758.20 : 1,030,574.70 = 402,448.20 : x
  2. Step 2: Convert to fraction form
    686,758.20/1,030,574.70 = 402,448.20/x
  3. Step 3: Cross multiply
    686,758.20x = 1,030,574.70 × 402,448.20
  4. Step 4: Simplify right side
    686,758.20x = 414,752,932,980.54
  5. Step 5: Solve for x
    x = 414,752,932,980.54/686,758.20
  6. Step 6: Final answer
    x = 603,928.62

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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.