Home / 765,270.12-1,056,082.32-421,145.64

Finding the Fourth Proportional to 765,270.12, 1,056,082.32 and 421,145.64

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Solution

The fourth proportional to 765,270.12, 1,056,082.32 and 421,145.64 is: 581,186.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,270.12 : 1,056,082.32 = 421,145.64 : x
  2. Step 2: Convert to fraction form
    765,270.12/1,056,082.32 = 421,145.64/x
  3. Step 3: Cross multiply
    765,270.12x = 1,056,082.32 × 421,145.64
  4. Step 4: Simplify right side
    765,270.12x = 444,764,464,549.09
  5. Step 5: Solve for x
    x = 444,764,464,549.09/765,270.12
  6. Step 6: Final answer
    x = 581,186.24

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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.