Home / 677,946.80-1,016,920.20-412,228.40

Finding the Fourth Proportional to 677,946.80, 1,016,920.20 and 412,228.40

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Solution

The fourth proportional to 677,946.80, 1,016,920.20 and 412,228.40 is: 618,342.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,946.80 : 1,016,920.20 = 412,228.40 : x
  2. Step 2: Convert to fraction form
    677,946.80/1,016,920.20 = 412,228.40/x
  3. Step 3: Cross multiply
    677,946.80x = 1,016,920.20 × 412,228.40
  4. Step 4: Simplify right side
    677,946.80x = 419,203,386,973.68
  5. Step 5: Solve for x
    x = 419,203,386,973.68/677,946.80
  6. Step 6: Final answer
    x = 618,342.60

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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.