Home / 740,821.20-1,111,280.40-208,359.60

Finding the Fourth Proportional to 740,821.20, 1,111,280.40 and 208,359.60

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Solution

The fourth proportional to 740,821.20, 1,111,280.40 and 208,359.60 is: 312,553.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,821.20 : 1,111,280.40 = 208,359.60 : x
  2. Step 2: Convert to fraction form
    740,821.20/1,111,280.40 = 208,359.60/x
  3. Step 3: Cross multiply
    740,821.20x = 1,111,280.40 × 208,359.60
  4. Step 4: Simplify right side
    740,821.20x = 231,545,939,631.84
  5. Step 5: Solve for x
    x = 231,545,939,631.84/740,821.20
  6. Step 6: Final answer
    x = 312,553.07

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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.