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Finding the Fourth Proportional to 658,123.80, 908,351.16 and 451,674.60

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Solution

The fourth proportional to 658,123.80, 908,351.16 and 451,674.60 is: 623,407.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,123.80 : 908,351.16 = 451,674.60 : x
  2. Step 2: Convert to fraction form
    658,123.80/908,351.16 = 451,674.60/x
  3. Step 3: Cross multiply
    658,123.80x = 908,351.16 × 451,674.60
  4. Step 4: Simplify right side
    658,123.80x = 410,279,146,852.54
  5. Step 5: Solve for x
    x = 410,279,146,852.54/658,123.80
  6. Step 6: Final answer
    x = 623,407.25

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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.