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Finding the Fourth Proportional to 664,312.80, 996,598.80 and 285,232.80

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Solution

The fourth proportional to 664,312.80, 996,598.80 and 285,232.80 is: 427,904.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,312.80 : 996,598.80 = 285,232.80 : x
  2. Step 2: Convert to fraction form
    664,312.80/996,598.80 = 285,232.80/x
  3. Step 3: Cross multiply
    664,312.80x = 996,598.80 × 285,232.80
  4. Step 4: Simplify right side
    664,312.80x = 284,262,666,200.64
  5. Step 5: Solve for x
    x = 284,262,666,200.64/664,312.80
  6. Step 6: Final answer
    x = 427,904.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.