Home / 686,719.20-1,030,516.20-402,409.20

Finding the Fourth Proportional to 686,719.20, 1,030,516.20 and 402,409.20

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Solution

The fourth proportional to 686,719.20, 1,030,516.20 and 402,409.20 is: 603,870.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,719.20 : 1,030,516.20 = 402,409.20 : x
  2. Step 2: Convert to fraction form
    686,719.20/1,030,516.20 = 402,409.20/x
  3. Step 3: Cross multiply
    686,719.20x = 1,030,516.20 × 402,409.20
  4. Step 4: Simplify right side
    686,719.20x = 414,689,199,629.04
  5. Step 5: Solve for x
    x = 414,689,199,629.04/686,719.20
  6. Step 6: Final answer
    x = 603,870.11

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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.