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Finding the Fourth Proportional to 521,254.64, 718,960.51 and 478,372.64

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Solution

The fourth proportional to 521,254.64, 718,960.51 and 478,372.64 is: 659,813.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,254.64 : 718,960.51 = 478,372.64 : x
  2. Step 2: Convert to fraction form
    521,254.64/718,960.51 = 478,372.64/x
  3. Step 3: Cross multiply
    521,254.64x = 718,960.51 × 478,372.64
  4. Step 4: Simplify right side
    521,254.64x = 343,931,037,224.45
  5. Step 5: Solve for x
    x = 343,931,037,224.45/521,254.64
  6. Step 6: Final answer
    x = 659,813.86

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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.