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Finding the Fourth Proportional to 520,445.73, 717,818.76 and 447,971.88

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Solution

The fourth proportional to 520,445.73, 717,818.76 and 447,971.88 is: 617,860.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,445.73 : 717,818.76 = 447,971.88 : x
  2. Step 2: Convert to fraction form
    520,445.73/717,818.76 = 447,971.88/x
  3. Step 3: Cross multiply
    520,445.73x = 717,818.76 × 447,971.88
  4. Step 4: Simplify right side
    520,445.73x = 321,562,619,416.47
  5. Step 5: Solve for x
    x = 321,562,619,416.47/520,445.73
  6. Step 6: Final answer
    x = 617,860.04

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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.