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Finding the Fourth Proportional to 636,000.60, 953,709.30 and 280,831.80

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Solution

The fourth proportional to 636,000.60, 953,709.30 and 280,831.80 is: 421,118.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,000.60 : 953,709.30 = 280,831.80 : x
  2. Step 2: Convert to fraction form
    636,000.60/953,709.30 = 280,831.80/x
  3. Step 3: Cross multiply
    636,000.60x = 953,709.30 × 280,831.80
  4. Step 4: Simplify right side
    636,000.60x = 267,831,899,395.74
  5. Step 5: Solve for x
    x = 267,831,899,395.74/636,000.60
  6. Step 6: Final answer
    x = 421,118.94

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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.