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Finding the Fourth Proportional to 489,104.40, 674,677.48 and 307,528.60

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Solution

The fourth proportional to 489,104.40, 674,677.48 and 307,528.60 is: 424,209.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,104.40 : 674,677.48 = 307,528.60 : x
  2. Step 2: Convert to fraction form
    489,104.40/674,677.48 = 307,528.60/x
  3. Step 3: Cross multiply
    489,104.40x = 674,677.48 × 307,528.60
  4. Step 4: Simplify right side
    489,104.40x = 207,482,620,875.93
  5. Step 5: Solve for x
    x = 207,482,620,875.93/489,104.40
  6. Step 6: Final answer
    x = 424,209.27

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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.