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Finding the Fourth Proportional to 520,431.84, 717,976.01 and 348,405.22

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Solution

The fourth proportional to 520,431.84, 717,976.01 and 348,405.22 is: 480,651.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,431.84 : 717,976.01 = 348,405.22 : x
  2. Step 2: Convert to fraction form
    520,431.84/717,976.01 = 348,405.22/x
  3. Step 3: Cross multiply
    520,431.84x = 717,976.01 × 348,405.22
  4. Step 4: Simplify right side
    520,431.84x = 250,146,589,718.77
  5. Step 5: Solve for x
    x = 250,146,589,718.77/520,431.84
  6. Step 6: Final answer
    x = 480,651.97

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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.