Home / 1,119,078.40-1,678,423.20-408,740.80

Finding the Fourth Proportional to 1,119,078.40, 1,678,423.20 and 408,740.80

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Solution

The fourth proportional to 1,119,078.40, 1,678,423.20 and 408,740.80 is: 613,040.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,078.40 : 1,678,423.20 = 408,740.80 : x
  2. Step 2: Convert to fraction form
    1,119,078.40/1,678,423.20 = 408,740.80/x
  3. Step 3: Cross multiply
    1,119,078.40x = 1,678,423.20 × 408,740.80
  4. Step 4: Simplify right side
    1,119,078.40x = 686,040,041,506.56
  5. Step 5: Solve for x
    x = 686,040,041,506.56/1,119,078.40
  6. Step 6: Final answer
    x = 613,040.20

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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.