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Finding the Fourth Proportional to 911,624.80, 1,367,437.20 and 439,232.80

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Solution

The fourth proportional to 911,624.80, 1,367,437.20 and 439,232.80 is: 658,849.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,624.80 : 1,367,437.20 = 439,232.80 : x
  2. Step 2: Convert to fraction form
    911,624.80/1,367,437.20 = 439,232.80/x
  3. Step 3: Cross multiply
    911,624.80x = 1,367,437.20 × 439,232.80
  4. Step 4: Simplify right side
    911,624.80x = 600,623,270,180.16
  5. Step 5: Solve for x
    x = 600,623,270,180.16/911,624.80
  6. Step 6: Final answer
    x = 658,849.20

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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.