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Finding the Fourth Proportional to 520,605.88, 718,489.12 and 316,670.87

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Solution

The fourth proportional to 520,605.88, 718,489.12 and 316,670.87 is: 437,038.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,605.88 : 718,489.12 = 316,670.87 : x
  2. Step 2: Convert to fraction form
    520,605.88/718,489.12 = 316,670.87/x
  3. Step 3: Cross multiply
    520,605.88x = 718,489.12 × 316,670.87
  4. Step 4: Simplify right side
    520,605.88x = 227,524,574,715.93
  5. Step 5: Solve for x
    x = 227,524,574,715.93/520,605.88
  6. Step 6: Final answer
    x = 437,038.04

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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.