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Finding the Fourth Proportional to 629,549, 868,776.28 and 343,068.40

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Solution

The fourth proportional to 629,549, 868,776.28 and 343,068.40 is: 473,433.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,549 : 868,776.28 = 343,068.40 : x
  2. Step 2: Convert to fraction form
    629,549/868,776.28 = 343,068.40/x
  3. Step 3: Cross multiply
    629,549x = 868,776.28 × 343,068.40
  4. Step 4: Simplify right side
    629,549x = 298,049,688,337.55
  5. Step 5: Solve for x
    x = 298,049,688,337.55/629,549
  6. Step 6: Final answer
    x = 473,433.66

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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.