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Finding the Fourth Proportional to 520,275.29, 718,099.88 and 338,670.90

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Solution

The fourth proportional to 520,275.29, 718,099.88 and 338,670.90 is: 467,443.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,275.29 : 718,099.88 = 338,670.90 : x
  2. Step 2: Convert to fraction form
    520,275.29/718,099.88 = 338,670.90/x
  3. Step 3: Cross multiply
    520,275.29x = 718,099.88 × 338,670.90
  4. Step 4: Simplify right side
    520,275.29x = 243,199,530,956.14
  5. Step 5: Solve for x
    x = 243,199,530,956.14/520,275.29
  6. Step 6: Final answer
    x = 467,443.94

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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.