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Finding the Fourth Proportional to 426,420, 588,511.44 and 247,572

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Solution

The fourth proportional to 426,420, 588,511.44 and 247,572 is: 341,679.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,420 : 588,511.44 = 247,572 : x
  2. Step 2: Convert to fraction form
    426,420/588,511.44 = 247,572/x
  3. Step 3: Cross multiply
    426,420x = 588,511.44 × 247,572
  4. Step 4: Simplify right side
    426,420x = 145,698,954,223.68
  5. Step 5: Solve for x
    x = 145,698,954,223.68/426,420
  6. Step 6: Final answer
    x = 341,679.46

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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.