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Finding the Fourth Proportional to 612,989.66, 919,475.24 and 275,792.18

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Solution

The fourth proportional to 612,989.66, 919,475.24 and 275,792.18 is: 413,684.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,989.66 : 919,475.24 = 275,792.18 : x
  2. Step 2: Convert to fraction form
    612,989.66/919,475.24 = 275,792.18/x
  3. Step 3: Cross multiply
    612,989.66x = 919,475.24 × 275,792.18
  4. Step 4: Simplify right side
    612,989.66x = 253,584,080,895.62
  5. Step 5: Solve for x
    x = 253,584,080,895.62/612,989.66
  6. Step 6: Final answer
    x = 413,684.11

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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.