Home / 739,084.40-1,108,918.20-289,728.80

Finding the Fourth Proportional to 739,084.40, 1,108,918.20 and 289,728.80

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Solution

The fourth proportional to 739,084.40, 1,108,918.20 and 289,728.80 is: 434,707.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,084.40 : 1,108,918.20 = 289,728.80 : x
  2. Step 2: Convert to fraction form
    739,084.40/1,108,918.20 = 289,728.80/x
  3. Step 3: Cross multiply
    739,084.40x = 1,108,918.20 × 289,728.80
  4. Step 4: Simplify right side
    739,084.40x = 321,285,539,384.16
  5. Step 5: Solve for x
    x = 321,285,539,384.16/739,084.40
  6. Step 6: Final answer
    x = 434,707.51

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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.