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Finding the Fourth Proportional to 520,497.18, 718,246.64 and 316,519.74

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Solution

The fourth proportional to 520,497.18, 718,246.64 and 316,519.74 is: 436,773.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,497.18 : 718,246.64 = 316,519.74 : x
  2. Step 2: Convert to fraction form
    520,497.18/718,246.64 = 316,519.74/x
  3. Step 3: Cross multiply
    520,497.18x = 718,246.64 × 316,519.74
  4. Step 4: Simplify right side
    520,497.18x = 227,339,240,539.97
  5. Step 5: Solve for x
    x = 227,339,240,539.97/520,497.18
  6. Step 6: Final answer
    x = 436,773.24

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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.