Home / 990,253.96-1,485,142.86-457,262.92

Finding the Fourth Proportional to 990,253.96, 1,485,142.86 and 457,262.92

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Solution

The fourth proportional to 990,253.96, 1,485,142.86 and 457,262.92 is: 685,784.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,253.96 : 1,485,142.86 = 457,262.92 : x
  2. Step 2: Convert to fraction form
    990,253.96/1,485,142.86 = 457,262.92/x
  3. Step 3: Cross multiply
    990,253.96x = 1,485,142.86 × 457,262.92
  4. Step 4: Simplify right side
    990,253.96x = 679,100,760,780.75
  5. Step 5: Solve for x
    x = 679,100,760,780.75/990,253.96
  6. Step 6: Final answer
    x = 685,784.44

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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.