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Finding the Fourth Proportional to 586,530.72, 809,358.48 and 331,840.80

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Solution

The fourth proportional to 586,530.72, 809,358.48 and 331,840.80 is: 457,909.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,530.72 : 809,358.48 = 331,840.80 : x
  2. Step 2: Convert to fraction form
    586,530.72/809,358.48 = 331,840.80/x
  3. Step 3: Cross multiply
    586,530.72x = 809,358.48 × 331,840.80
  4. Step 4: Simplify right side
    586,530.72x = 268,578,165,489.98
  5. Step 5: Solve for x
    x = 268,578,165,489.98/586,530.72
  6. Step 6: Final answer
    x = 457,909.80

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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.