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Finding the Fourth Proportional to 476,718.16, 657,596.23 and 285,620.84

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Solution

The fourth proportional to 476,718.16, 657,596.23 and 285,620.84 is: 393,992.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,718.16 : 657,596.23 = 285,620.84 : x
  2. Step 2: Convert to fraction form
    476,718.16/657,596.23 = 285,620.84/x
  3. Step 3: Cross multiply
    476,718.16x = 657,596.23 × 285,620.84
  4. Step 4: Simplify right side
    476,718.16x = 187,823,187,593.43
  5. Step 5: Solve for x
    x = 187,823,187,593.43/476,718.16
  6. Step 6: Final answer
    x = 393,992.10

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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.