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Finding the Fourth Proportional to 520,332.84, 718,175.25 and 316,340.64

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Solution

The fourth proportional to 520,332.84, 718,175.25 and 316,340.64 is: 436,620.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,332.84 : 718,175.25 = 316,340.64 : x
  2. Step 2: Convert to fraction form
    520,332.84/718,175.25 = 316,340.64/x
  3. Step 3: Cross multiply
    520,332.84x = 718,175.25 × 316,340.64
  4. Step 4: Simplify right side
    520,332.84x = 227,188,018,217.16
  5. Step 5: Solve for x
    x = 227,188,018,217.16/520,332.84
  6. Step 6: Final answer
    x = 436,620.56

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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.