Home / 723,409.20-1,085,632.20-407,530.80

Finding the Fourth Proportional to 723,409.20, 1,085,632.20 and 407,530.80

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Solution

The fourth proportional to 723,409.20, 1,085,632.20 and 407,530.80 is: 611,588.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,409.20 : 1,085,632.20 = 407,530.80 : x
  2. Step 2: Convert to fraction form
    723,409.20/1,085,632.20 = 407,530.80/x
  3. Step 3: Cross multiply
    723,409.20x = 1,085,632.20 × 407,530.80
  4. Step 4: Simplify right side
    723,409.20x = 442,428,558,971.76
  5. Step 5: Solve for x
    x = 442,428,558,971.76/723,409.20
  6. Step 6: Final answer
    x = 611,588.24

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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.