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Finding the Fourth Proportional to 629,349.40, 868,499.58 and 342,868.60

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Solution

The fourth proportional to 629,349.40, 868,499.58 and 342,868.60 is: 473,157.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,349.40 : 868,499.58 = 342,868.60 : x
  2. Step 2: Convert to fraction form
    629,349.40/868,499.58 = 342,868.60/x
  3. Step 3: Cross multiply
    629,349.40x = 868,499.58 × 342,868.60
  4. Step 4: Simplify right side
    629,349.40x = 297,781,235,095.19
  5. Step 5: Solve for x
    x = 297,781,235,095.19/629,349.40
  6. Step 6: Final answer
    x = 473,157.26

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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.