Home / 899,400.80-1,241,189.40-491,519.92

Finding the Fourth Proportional to 899,400.80, 1,241,189.40 and 491,519.92

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Solution

The fourth proportional to 899,400.80, 1,241,189.40 and 491,519.92 is: 678,306.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,400.80 : 1,241,189.40 = 491,519.92 : x
  2. Step 2: Convert to fraction form
    899,400.80/1,241,189.40 = 491,519.92/x
  3. Step 3: Cross multiply
    899,400.80x = 1,241,189.40 × 491,519.92
  4. Step 4: Simplify right side
    899,400.80x = 610,069,314,592.85
  5. Step 5: Solve for x
    x = 610,069,314,592.85/899,400.80
  6. Step 6: Final answer
    x = 678,306.40

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Double scale
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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.