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Finding the Fourth Proportional to 649,615.40, 973,904.70 and 275,330.60

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Solution

The fourth proportional to 649,615.40, 973,904.70 and 275,330.60 is: 412,776.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,615.40 : 973,904.70 = 275,330.60 : x
  2. Step 2: Convert to fraction form
    649,615.40/973,904.70 = 275,330.60/x
  3. Step 3: Cross multiply
    649,615.40x = 973,904.70 × 275,330.60
  4. Step 4: Simplify right side
    649,615.40x = 268,145,765,393.82
  5. Step 5: Solve for x
    x = 268,145,765,393.82/649,615.40
  6. Step 6: Final answer
    x = 412,776.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.