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Finding the Fourth Proportional to 408,868.60, 613,302.90 and 302,580.40

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Solution

The fourth proportional to 408,868.60, 613,302.90 and 302,580.40 is: 453,870.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,868.60 : 613,302.90 = 302,580.40 : x
  2. Step 2: Convert to fraction form
    408,868.60/613,302.90 = 302,580.40/x
  3. Step 3: Cross multiply
    408,868.60x = 613,302.90 × 302,580.40
  4. Step 4: Simplify right side
    408,868.60x = 185,573,436,803.16
  5. Step 5: Solve for x
    x = 185,573,436,803.16/408,868.60
  6. Step 6: Final answer
    x = 453,870.60

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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.