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Finding the Fourth Proportional to 520,086.47, 717,450.35 and 329,210.60

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Solution

The fourth proportional to 520,086.47, 717,450.35 and 329,210.60 is: 454,140.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,086.47 : 717,450.35 = 329,210.60 : x
  2. Step 2: Convert to fraction form
    520,086.47/717,450.35 = 329,210.60/x
  3. Step 3: Cross multiply
    520,086.47x = 717,450.35 × 329,210.60
  4. Step 4: Simplify right side
    520,086.47x = 236,192,254,960.41
  5. Step 5: Solve for x
    x = 236,192,254,960.41/520,086.47
  6. Step 6: Final answer
    x = 454,140.36

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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.