Home / 851,221.12-1,174,574.64-488,660.80

Finding the Fourth Proportional to 851,221.12, 1,174,574.64 and 488,660.80

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Solution

The fourth proportional to 851,221.12, 1,174,574.64 and 488,660.80 is: 674,288.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,221.12 : 1,174,574.64 = 488,660.80 : x
  2. Step 2: Convert to fraction form
    851,221.12/1,174,574.64 = 488,660.80/x
  3. Step 3: Cross multiply
    851,221.12x = 1,174,574.64 × 488,660.80
  4. Step 4: Simplify right side
    851,221.12x = 573,968,583,242.11
  5. Step 5: Solve for x
    x = 573,968,583,242.11/851,221.12
  6. Step 6: Final answer
    x = 674,288.47

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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.