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Finding the Fourth Proportional to 476,717.67, 657,595.55 and 285,620.34

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Solution

The fourth proportional to 476,717.67, 657,595.55 and 285,620.34 is: 393,991.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,717.67 : 657,595.55 = 285,620.34 : x
  2. Step 2: Convert to fraction form
    476,717.67/657,595.55 = 285,620.34/x
  3. Step 3: Cross multiply
    476,717.67x = 657,595.55 × 285,620.34
  4. Step 4: Simplify right side
    476,717.67x = 187,822,663,145.39
  5. Step 5: Solve for x
    x = 187,822,663,145.39/476,717.67
  6. Step 6: Final answer
    x = 393,991.41

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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.