Home / 499,984.16-689,961.12-285,193.76

Finding the Fourth Proportional to 499,984.16, 689,961.12 and 285,193.76

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Solution

The fourth proportional to 499,984.16, 689,961.12 and 285,193.76 is: 393,557.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,984.16 : 689,961.12 = 285,193.76 : x
  2. Step 2: Convert to fraction form
    499,984.16/689,961.12 = 285,193.76/x
  3. Step 3: Cross multiply
    499,984.16x = 689,961.12 × 285,193.76
  4. Step 4: Simplify right side
    499,984.16x = 196,772,606,066.61
  5. Step 5: Solve for x
    x = 196,772,606,066.61/499,984.16
  6. Step 6: Final answer
    x = 393,557.68

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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.