Home / 1,189,117.20-1,783,675.80-763,964.40

Finding the Fourth Proportional to 1,189,117.20, 1,783,675.80 and 763,964.40

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Solution

The fourth proportional to 1,189,117.20, 1,783,675.80 and 763,964.40 is: 1,145,946.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,117.20 : 1,783,675.80 = 763,964.40 : x
  2. Step 2: Convert to fraction form
    1,189,117.20/1,783,675.80 = 763,964.40/x
  3. Step 3: Cross multiply
    1,189,117.20x = 1,783,675.80 × 763,964.40
  4. Step 4: Simplify right side
    1,189,117.20x = 1,362,664,812,341.52
  5. Step 5: Solve for x
    x = 1,362,664,812,341.52/1,189,117.20
  6. Step 6: Final answer
    x = 1,145,946.60

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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.