Home / 661,298.68-991,926.06-287,321.68

Finding the Fourth Proportional to 661,298.68, 991,926.06 and 287,321.68

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Solution

The fourth proportional to 661,298.68, 991,926.06 and 287,321.68 is: 430,972.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,298.68 : 991,926.06 = 287,321.68 : x
  2. Step 2: Convert to fraction form
    661,298.68/991,926.06 = 287,321.68/x
  3. Step 3: Cross multiply
    661,298.68x = 991,926.06 × 287,321.68
  4. Step 4: Simplify right side
    661,298.68x = 285,001,861,994.98
  5. Step 5: Solve for x
    x = 285,001,861,994.98/661,298.68
  6. Step 6: Final answer
    x = 430,972.98

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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.