Home / 912,005.20-1,368,007.80-613,406.80

Finding the Fourth Proportional to 912,005.20, 1,368,007.80 and 613,406.80

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Solution

The fourth proportional to 912,005.20, 1,368,007.80 and 613,406.80 is: 920,110.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,005.20 : 1,368,007.80 = 613,406.80 : x
  2. Step 2: Convert to fraction form
    912,005.20/1,368,007.80 = 613,406.80/x
  3. Step 3: Cross multiply
    912,005.20x = 1,368,007.80 × 613,406.80
  4. Step 4: Simplify right side
    912,005.20x = 839,145,286,973.04
  5. Step 5: Solve for x
    x = 839,145,286,973.04/912,005.20
  6. Step 6: Final answer
    x = 920,110.20

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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.