Home / 899,187.76-1,240,864.63-491,280.85

Finding the Fourth Proportional to 899,187.76, 1,240,864.63 and 491,280.85

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Solution

The fourth proportional to 899,187.76, 1,240,864.63 and 491,280.85 is: 677,959.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,187.76 : 1,240,864.63 = 491,280.85 : x
  2. Step 2: Convert to fraction form
    899,187.76/1,240,864.63 = 491,280.85/x
  3. Step 3: Cross multiply
    899,187.76x = 1,240,864.63 × 491,280.85
  4. Step 4: Simplify right side
    899,187.76x = 609,613,028,933.13
  5. Step 5: Solve for x
    x = 609,613,028,933.13/899,187.76
  6. Step 6: Final answer
    x = 677,959.66

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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.