Home / 661,986.10-991,958.55-492,712.30

Finding the Fourth Proportional to 661,986.10, 991,958.55 and 492,712.30

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Solution

The fourth proportional to 661,986.10, 991,958.55 and 492,712.30 is: 738,308.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,986.10 : 991,958.55 = 492,712.30 : x
  2. Step 2: Convert to fraction form
    661,986.10/991,958.55 = 492,712.30/x
  3. Step 3: Cross multiply
    661,986.10x = 991,958.55 × 492,712.30
  4. Step 4: Simplify right side
    661,986.10x = 488,750,178,675.17
  5. Step 5: Solve for x
    x = 488,750,178,675.17/661,986.10
  6. Step 6: Final answer
    x = 738,308.82

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Double scale
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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.