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Finding the Fourth Proportional to 486,477.12, 671,450.40 and 285,337.92

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Solution

The fourth proportional to 486,477.12, 671,450.40 and 285,337.92 is: 393,832.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,477.12 : 671,450.40 = 285,337.92 : x
  2. Step 2: Convert to fraction form
    486,477.12/671,450.40 = 285,337.92/x
  3. Step 3: Cross multiply
    486,477.12x = 671,450.40 × 285,337.92
  4. Step 4: Simplify right side
    486,477.12x = 191,590,260,519.17
  5. Step 5: Solve for x
    x = 191,590,260,519.17/486,477.12
  6. Step 6: Final answer
    x = 393,832.01

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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.