Home / 1,280,685.90-1,767,565.20-764,466.42

Finding the Fourth Proportional to 1,280,685.90, 1,767,565.20 and 764,466.42

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Solution

The fourth proportional to 1,280,685.90, 1,767,565.20 and 764,466.42 is: 1,055,094.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,685.90 : 1,767,565.20 = 764,466.42 : x
  2. Step 2: Convert to fraction form
    1,280,685.90/1,767,565.20 = 764,466.42/x
  3. Step 3: Cross multiply
    1,280,685.90x = 1,767,565.20 × 764,466.42
  4. Step 4: Simplify right side
    1,280,685.90x = 1,351,244,231,722.76
  5. Step 5: Solve for x
    x = 1,351,244,231,722.76/1,280,685.90
  6. Step 6: Final answer
    x = 1,055,094.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.