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Finding the Fourth Proportional to 485,085.54, 664,570.42 and 466,904.16

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Solution

The fourth proportional to 485,085.54, 664,570.42 and 466,904.16 is: 639,661.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,085.54 : 664,570.42 = 466,904.16 : x
  2. Step 2: Convert to fraction form
    485,085.54/664,570.42 = 466,904.16/x
  3. Step 3: Cross multiply
    485,085.54x = 664,570.42 × 466,904.16
  4. Step 4: Simplify right side
    485,085.54x = 310,290,692,543.69
  5. Step 5: Solve for x
    x = 310,290,692,543.69/485,085.54
  6. Step 6: Final answer
    x = 639,661.81

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.