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Finding the Fourth Proportional to 520,606.26, 718,489.64 and 316,671.24

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Solution

The fourth proportional to 520,606.26, 718,489.64 and 316,671.24 is: 437,038.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,606.26 : 718,489.64 = 316,671.24 : x
  2. Step 2: Convert to fraction form
    520,606.26/718,489.64 = 316,671.24/x
  3. Step 3: Cross multiply
    520,606.26x = 718,489.64 × 316,671.24
  4. Step 4: Simplify right side
    520,606.26x = 227,525,003,642.60
  5. Step 5: Solve for x
    x = 227,525,003,642.60/520,606.26
  6. Step 6: Final answer
    x = 437,038.55

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1.5x scale

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.