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Finding the Fourth Proportional to 661,983.60, 991,954.80 and 492,709.80

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Solution

The fourth proportional to 661,983.60, 991,954.80 and 492,709.80 is: 738,305.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,983.60 : 991,954.80 = 492,709.80 : x
  2. Step 2: Convert to fraction form
    661,983.60/991,954.80 = 492,709.80/x
  3. Step 3: Cross multiply
    661,983.60x = 991,954.80 × 492,709.80
  4. Step 4: Simplify right side
    661,983.60x = 488,745,851,117.04
  5. Step 5: Solve for x
    x = 488,745,851,117.04/661,983.60
  6. Step 6: Final answer
    x = 738,305.07

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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.