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Finding the Fourth Proportional to 629,340.57, 868,818.15 and 489,328.83

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Solution

The fourth proportional to 629,340.57, 868,818.15 and 489,328.83 is: 675,528.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,340.57 : 868,818.15 = 489,328.83 : x
  2. Step 2: Convert to fraction form
    629,340.57/868,818.15 = 489,328.83/x
  3. Step 3: Cross multiply
    629,340.57x = 868,818.15 × 489,328.83
  4. Step 4: Simplify right side
    629,340.57x = 425,137,768,822.27
  5. Step 5: Solve for x
    x = 425,137,768,822.27/629,340.57
  6. Step 6: Final answer
    x = 675,528.94

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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.