Home / 726,739.40-1,090,109.10-446,803.40

Finding the Fourth Proportional to 726,739.40, 1,090,109.10 and 446,803.40

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Solution

The fourth proportional to 726,739.40, 1,090,109.10 and 446,803.40 is: 670,205.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,739.40 : 1,090,109.10 = 446,803.40 : x
  2. Step 2: Convert to fraction form
    726,739.40/1,090,109.10 = 446,803.40/x
  3. Step 3: Cross multiply
    726,739.40x = 1,090,109.10 × 446,803.40
  4. Step 4: Simplify right side
    726,739.40x = 487,064,452,250.94
  5. Step 5: Solve for x
    x = 487,064,452,250.94/726,739.40
  6. Step 6: Final answer
    x = 670,205.10

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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.