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Finding the Fourth Proportional to 656,650.80, 906,176.16 and 354,844.80

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Solution

The fourth proportional to 656,650.80, 906,176.16 and 354,844.80 is: 489,684.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,650.80 : 906,176.16 = 354,844.80 : x
  2. Step 2: Convert to fraction form
    656,650.80/906,176.16 = 354,844.80/x
  3. Step 3: Cross multiply
    656,650.80x = 906,176.16 × 354,844.80
  4. Step 4: Simplify right side
    656,650.80x = 321,551,898,259.97
  5. Step 5: Solve for x
    x = 321,551,898,259.97/656,650.80
  6. Step 6: Final answer
    x = 489,684.77

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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.