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Finding the Fourth Proportional to 509,622.80, 763,915.80 and 299,152.40

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Solution

The fourth proportional to 509,622.80, 763,915.80 and 299,152.40 is: 448,424.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,622.80 : 763,915.80 = 299,152.40 : x
  2. Step 2: Convert to fraction form
    509,622.80/763,915.80 = 299,152.40/x
  3. Step 3: Cross multiply
    509,622.80x = 763,915.80 × 299,152.40
  4. Step 4: Simplify right side
    509,622.80x = 228,527,244,967.92
  5. Step 5: Solve for x
    x = 228,527,244,967.92/509,622.80
  6. Step 6: Final answer
    x = 448,424.30

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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.