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Finding the Fourth Proportional to 612,728.32, 918,840 and 233,787.04

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Solution

The fourth proportional to 612,728.32, 918,840 and 233,787.04 is: 350,584.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,728.32 : 918,840 = 233,787.04 : x
  2. Step 2: Convert to fraction form
    612,728.32/918,840 = 233,787.04/x
  3. Step 3: Cross multiply
    612,728.32x = 918,840 × 233,787.04
  4. Step 4: Simplify right side
    612,728.32x = 214,812,883,833.60
  5. Step 5: Solve for x
    x = 214,812,883,833.60/612,728.32
  6. Step 6: Final answer
    x = 350,584.23

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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.