Home / 470,844.70-649,868.87-309,715.65

Finding the Fourth Proportional to 470,844.70, 649,868.87 and 309,715.65

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Solution

The fourth proportional to 470,844.70, 649,868.87 and 309,715.65 is: 427,475.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,844.70 : 649,868.87 = 309,715.65 : x
  2. Step 2: Convert to fraction form
    470,844.70/649,868.87 = 309,715.65/x
  3. Step 3: Cross multiply
    470,844.70x = 649,868.87 × 309,715.65
  4. Step 4: Simplify right side
    470,844.70x = 201,274,560,261.11
  5. Step 5: Solve for x
    x = 201,274,560,261.11/470,844.70
  6. Step 6: Final answer
    x = 427,475.47

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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.