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Finding the Fourth Proportional to 686,018.68, 947,034.86 and 482,244.28

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Solution

The fourth proportional to 686,018.68, 947,034.86 and 482,244.28 is: 665,728.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,018.68 : 947,034.86 = 482,244.28 : x
  2. Step 2: Convert to fraction form
    686,018.68/947,034.86 = 482,244.28/x
  3. Step 3: Cross multiply
    686,018.68x = 947,034.86 × 482,244.28
  4. Step 4: Simplify right side
    686,018.68x = 456,702,139,416.79
  5. Step 5: Solve for x
    x = 456,702,139,416.79/686,018.68
  6. Step 6: Final answer
    x = 665,728.43

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Double scale
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Similar ratio
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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.