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Finding the Fourth Proportional to 601,915.36, 830,637.90 and 329,978.30

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Solution

The fourth proportional to 601,915.36, 830,637.90 and 329,978.30 is: 455,367.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    601,915.36 : 830,637.90 = 329,978.30 : x
  2. Step 2: Convert to fraction form
    601,915.36/830,637.90 = 329,978.30/x
  3. Step 3: Cross multiply
    601,915.36x = 830,637.90 × 329,978.30
  4. Step 4: Simplify right side
    601,915.36x = 274,092,482,157.57
  5. Step 5: Solve for x
    x = 274,092,482,157.57/601,915.36
  6. Step 6: Final answer
    x = 455,367.15

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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.