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Finding the Fourth Proportional to 520,485.48, 718,230.06 and 316,508.22

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Solution

The fourth proportional to 520,485.48, 718,230.06 and 316,508.22 is: 436,757.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,485.48 : 718,230.06 = 316,508.22 : x
  2. Step 2: Convert to fraction form
    520,485.48/718,230.06 = 316,508.22/x
  3. Step 3: Cross multiply
    520,485.48x = 718,230.06 × 316,508.22
  4. Step 4: Simplify right side
    520,485.48x = 227,325,717,841.09
  5. Step 5: Solve for x
    x = 227,325,717,841.09/520,485.48
  6. Step 6: Final answer
    x = 436,757.08

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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.