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Finding the Fourth Proportional to 434,480.80, 651,202.80 and 389,898.40

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Solution

The fourth proportional to 434,480.80, 651,202.80 and 389,898.40 is: 584,382.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,480.80 : 651,202.80 = 389,898.40 : x
  2. Step 2: Convert to fraction form
    434,480.80/651,202.80 = 389,898.40/x
  3. Step 3: Cross multiply
    434,480.80x = 651,202.80 × 389,898.40
  4. Step 4: Simplify right side
    434,480.80x = 253,902,929,795.52
  5. Step 5: Solve for x
    x = 253,902,929,795.52/434,480.80
  6. Step 6: Final answer
    x = 584,382.39

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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.