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Finding the Fourth Proportional to 439,823.60, 658,860.60 and 408,330.80

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Solution

The fourth proportional to 439,823.60, 658,860.60 and 408,330.80 is: 611,684.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,823.60 : 658,860.60 = 408,330.80 : x
  2. Step 2: Convert to fraction form
    439,823.60/658,860.60 = 408,330.80/x
  3. Step 3: Cross multiply
    439,823.60x = 658,860.60 × 408,330.80
  4. Step 4: Simplify right side
    439,823.60x = 269,033,075,886.48
  5. Step 5: Solve for x
    x = 269,033,075,886.48/439,823.60
  6. Step 6: Final answer
    x = 611,684.04

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1.5x scale

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.