Home / 1,339,615.80-2,009,423.70-342,343.80

Finding the Fourth Proportional to 1,339,615.80, 2,009,423.70 and 342,343.80

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Solution

The fourth proportional to 1,339,615.80, 2,009,423.70 and 342,343.80 is: 513,515.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339,615.80 : 2,009,423.70 = 342,343.80 : x
  2. Step 2: Convert to fraction form
    1,339,615.80/2,009,423.70 = 342,343.80/x
  3. Step 3: Cross multiply
    1,339,615.80x = 2,009,423.70 × 342,343.80
  4. Step 4: Simplify right side
    1,339,615.80x = 687,913,745,268.06
  5. Step 5: Solve for x
    x = 687,913,745,268.06/1,339,615.80
  6. Step 6: Final answer
    x = 513,515.70

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Double scale
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Similar ratio
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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.