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Finding the Fourth Proportional to 612,110.70, 917,728.65 and 274,875.30

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Solution

The fourth proportional to 612,110.70, 917,728.65 and 274,875.30 is: 412,116.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,110.70 : 917,728.65 = 274,875.30 : x
  2. Step 2: Convert to fraction form
    612,110.70/917,728.65 = 274,875.30/x
  3. Step 3: Cross multiply
    612,110.70x = 917,728.65 × 274,875.30
  4. Step 4: Simplify right side
    612,110.70x = 252,260,937,987.35
  5. Step 5: Solve for x
    x = 252,260,937,987.35/612,110.70
  6. Step 6: Final answer
    x = 412,116.53

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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.