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Finding the Fourth Proportional to 434,530.80, 651,407.40 and 284,842.80

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Solution

The fourth proportional to 434,530.80, 651,407.40 and 284,842.80 is: 427,009.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,530.80 : 651,407.40 = 284,842.80 : x
  2. Step 2: Convert to fraction form
    434,530.80/651,407.40 = 284,842.80/x
  3. Step 3: Cross multiply
    434,530.80x = 651,407.40 × 284,842.80
  4. Step 4: Simplify right side
    434,530.80x = 185,548,707,756.72
  5. Step 5: Solve for x
    x = 185,548,707,756.72/434,530.80
  6. Step 6: Final answer
    x = 427,009.33

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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.