Home / 910,857.40-1,366,286.10-437,428.60

Finding the Fourth Proportional to 910,857.40, 1,366,286.10 and 437,428.60

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Solution

The fourth proportional to 910,857.40, 1,366,286.10 and 437,428.60 is: 656,142.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,857.40 : 1,366,286.10 = 437,428.60 : x
  2. Step 2: Convert to fraction form
    910,857.40/1,366,286.10 = 437,428.60/x
  3. Step 3: Cross multiply
    910,857.40x = 1,366,286.10 × 437,428.60
  4. Step 4: Simplify right side
    910,857.40x = 597,652,615,922.46
  5. Step 5: Solve for x
    x = 597,652,615,922.46/910,857.40
  6. Step 6: Final answer
    x = 656,142.90

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.