Home / 900,185.76-1,242,249.48-492,285.96

Finding the Fourth Proportional to 900,185.76, 1,242,249.48 and 492,285.96

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Solution

The fourth proportional to 900,185.76, 1,242,249.48 and 492,285.96 is: 679,350.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,185.76 : 1,242,249.48 = 492,285.96 : x
  2. Step 2: Convert to fraction form
    900,185.76/1,242,249.48 = 492,285.96/x
  3. Step 3: Cross multiply
    900,185.76x = 1,242,249.48 × 492,285.96
  4. Step 4: Simplify right side
    900,185.76x = 611,541,977,821.30
  5. Step 5: Solve for x
    x = 611,541,977,821.30/900,185.76
  6. Step 6: Final answer
    x = 679,350.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.