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Finding the Fourth Proportional to 460,912.40, 636,352.68 and 376,230.80

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Solution

The fourth proportional to 460,912.40, 636,352.68 and 376,230.80 is: 519,438.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,912.40 : 636,352.68 = 376,230.80 : x
  2. Step 2: Convert to fraction form
    460,912.40/636,352.68 = 376,230.80/x
  3. Step 3: Cross multiply
    460,912.40x = 636,352.68 × 376,230.80
  4. Step 4: Simplify right side
    460,912.40x = 239,415,477,878.54
  5. Step 5: Solve for x
    x = 239,415,477,878.54/460,912.40
  6. Step 6: Final answer
    x = 519,438.14

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1.5x scale

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.