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Finding the Fourth Proportional to 656,865.70, 985,298.55 and 302,571.70

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Solution

The fourth proportional to 656,865.70, 985,298.55 and 302,571.70 is: 453,857.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,865.70 : 985,298.55 = 302,571.70 : x
  2. Step 2: Convert to fraction form
    656,865.70/985,298.55 = 302,571.70/x
  3. Step 3: Cross multiply
    656,865.70x = 985,298.55 × 302,571.70
  4. Step 4: Simplify right side
    656,865.70x = 298,123,457,281.04
  5. Step 5: Solve for x
    x = 298,123,457,281.04/656,865.70
  6. Step 6: Final answer
    x = 453,857.55

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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.