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Finding the Fourth Proportional to 520,240.52, 717,990.20 and 293,900.60

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Solution

The fourth proportional to 520,240.52, 717,990.20 and 293,900.60 is: 405,615.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,240.52 : 717,990.20 = 293,900.60 : x
  2. Step 2: Convert to fraction form
    520,240.52/717,990.20 = 293,900.60/x
  3. Step 3: Cross multiply
    520,240.52x = 717,990.20 × 293,900.60
  4. Step 4: Simplify right side
    520,240.52x = 211,017,750,574.12
  5. Step 5: Solve for x
    x = 211,017,750,574.12/520,240.52
  6. Step 6: Final answer
    x = 405,615.75

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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.