Home / 899,189.32-1,240,866.78-491,282.40

Finding the Fourth Proportional to 899,189.32, 1,240,866.78 and 491,282.40

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Solution

The fourth proportional to 899,189.32, 1,240,866.78 and 491,282.40 is: 677,961.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,189.32 : 1,240,866.78 = 491,282.40 : x
  2. Step 2: Convert to fraction form
    899,189.32/1,240,866.78 = 491,282.40/x
  3. Step 3: Cross multiply
    899,189.32x = 1,240,866.78 × 491,282.40
  4. Step 4: Simplify right side
    899,189.32x = 609,616,009,758.67
  5. Step 5: Solve for x
    x = 609,616,009,758.67/899,189.32
  6. Step 6: Final answer
    x = 677,961.80

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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.