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Finding the Fourth Proportional to 515,065.20, 770,848.20 and 452,079.60

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Solution

The fourth proportional to 515,065.20, 770,848.20 and 452,079.60 is: 676,583.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,065.20 : 770,848.20 = 452,079.60 : x
  2. Step 2: Convert to fraction form
    515,065.20/770,848.20 = 452,079.60/x
  3. Step 3: Cross multiply
    515,065.20x = 770,848.20 × 452,079.60
  4. Step 4: Simplify right side
    515,065.20x = 348,484,745,916.72
  5. Step 5: Solve for x
    x = 348,484,745,916.72/515,065.20
  6. Step 6: Final answer
    x = 676,583.75

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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.