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Finding the Fourth Proportional to 520,657.66, 780,819.02 and 165,588.49

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Solution

The fourth proportional to 520,657.66, 780,819.02 and 165,588.49 is: 248,329.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,657.66 : 780,819.02 = 165,588.49 : x
  2. Step 2: Convert to fraction form
    520,657.66/780,819.02 = 165,588.49/x
  3. Step 3: Cross multiply
    520,657.66x = 780,819.02 × 165,588.49
  4. Step 4: Simplify right side
    520,657.66x = 129,294,642,485.08
  5. Step 5: Solve for x
    x = 129,294,642,485.08/520,657.66
  6. Step 6: Final answer
    x = 248,329.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.