Home / 1,339,564.80-2,009,347.20-342,292.80

Finding the Fourth Proportional to 1,339,564.80, 2,009,347.20 and 342,292.80

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Solution

The fourth proportional to 1,339,564.80, 2,009,347.20 and 342,292.80 is: 513,439.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339,564.80 : 2,009,347.20 = 342,292.80 : x
  2. Step 2: Convert to fraction form
    1,339,564.80/2,009,347.20 = 342,292.80/x
  3. Step 3: Cross multiply
    1,339,564.80x = 2,009,347.20 × 342,292.80
  4. Step 4: Simplify right side
    1,339,564.80x = 687,785,079,260.16
  5. Step 5: Solve for x
    x = 687,785,079,260.16/1,339,564.80
  6. Step 6: Final answer
    x = 513,439.20

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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.