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Finding the Fourth Proportional to 470,424.42, 649,241.36 and 279,438.57

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Solution

The fourth proportional to 470,424.42, 649,241.36 and 279,438.57 is: 385,658.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,424.42 : 649,241.36 = 279,438.57 : x
  2. Step 2: Convert to fraction form
    470,424.42/649,241.36 = 279,438.57/x
  3. Step 3: Cross multiply
    470,424.42x = 649,241.36 × 279,438.57
  4. Step 4: Simplify right side
    470,424.42x = 181,423,075,826.06
  5. Step 5: Solve for x
    x = 181,423,075,826.06/470,424.42
  6. Step 6: Final answer
    x = 385,658.29

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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.