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Finding the Fourth Proportional to 761,679.72, 1,142,617.86 and 256,022.64

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Solution

The fourth proportional to 761,679.72, 1,142,617.86 and 256,022.64 is: 384,066.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,679.72 : 1,142,617.86 = 256,022.64 : x
  2. Step 2: Convert to fraction form
    761,679.72/1,142,617.86 = 256,022.64/x
  3. Step 3: Cross multiply
    761,679.72x = 1,142,617.86 × 256,022.64
  4. Step 4: Simplify right side
    761,679.72x = 292,536,041,028.35
  5. Step 5: Solve for x
    x = 292,536,041,028.35/761,679.72
  6. Step 6: Final answer
    x = 384,066.99

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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.