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Finding the Fourth Proportional to 407,857.65, 562,859.51 and 279,066.24

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Solution

The fourth proportional to 407,857.65, 562,859.51 and 279,066.24 is: 385,122.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,857.65 : 562,859.51 = 279,066.24 : x
  2. Step 2: Convert to fraction form
    407,857.65/562,859.51 = 279,066.24/x
  3. Step 3: Cross multiply
    407,857.65x = 562,859.51 × 279,066.24
  4. Step 4: Simplify right side
    407,857.65x = 157,075,086,755.11
  5. Step 5: Solve for x
    x = 157,075,086,755.11/407,857.65
  6. Step 6: Final answer
    x = 385,122.33

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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.