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Finding the Fourth Proportional to 661,985.60, 991,957.80 and 492,711.80

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Solution

The fourth proportional to 661,985.60, 991,957.80 and 492,711.80 is: 738,308.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,985.60 : 991,957.80 = 492,711.80 : x
  2. Step 2: Convert to fraction form
    661,985.60/991,957.80 = 492,711.80/x
  3. Step 3: Cross multiply
    661,985.60x = 991,957.80 × 492,711.80
  4. Step 4: Simplify right side
    661,985.60x = 488,749,313,162.04
  5. Step 5: Solve for x
    x = 488,749,313,162.04/661,985.60
  6. Step 6: Final answer
    x = 738,308.07

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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.