Home / 768,559.81-1,153,542.84-389,742.01

Finding the Fourth Proportional to 768,559.81, 1,153,542.84 and 389,742.01

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Solution

The fourth proportional to 768,559.81, 1,153,542.84 and 389,742.01 is: 584,969.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,559.81 : 1,153,542.84 = 389,742.01 : x
  2. Step 2: Convert to fraction form
    768,559.81/1,153,542.84 = 389,742.01/x
  3. Step 3: Cross multiply
    768,559.81x = 1,153,542.84 × 389,742.01
  4. Step 4: Simplify right side
    768,559.81x = 449,584,105,082.71
  5. Step 5: Solve for x
    x = 449,584,105,082.71/768,559.81
  6. Step 6: Final answer
    x = 584,969.57

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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.