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Finding the Fourth Proportional to 399,630.04, 598,928.34 and 299,000.70

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Solution

The fourth proportional to 399,630.04, 598,928.34 and 299,000.70 is: 448,114.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,630.04 : 598,928.34 = 299,000.70 : x
  2. Step 2: Convert to fraction form
    399,630.04/598,928.34 = 299,000.70/x
  3. Step 3: Cross multiply
    399,630.04x = 598,928.34 × 299,000.70
  4. Step 4: Simplify right side
    399,630.04x = 179,079,994,031.09
  5. Step 5: Solve for x
    x = 179,079,994,031.09/399,630.04
  6. Step 6: Final answer
    x = 448,114.45

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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.