Home / 723,399.40-1,085,235.20-291,149.92

Finding the Fourth Proportional to 723,399.40, 1,085,235.20 and 291,149.92

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Solution

The fourth proportional to 723,399.40, 1,085,235.20 and 291,149.92 is: 436,779.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,399.40 : 1,085,235.20 = 291,149.92 : x
  2. Step 2: Convert to fraction form
    723,399.40/1,085,235.20 = 291,149.92/x
  3. Step 3: Cross multiply
    723,399.40x = 1,085,235.20 × 291,149.92
  4. Step 4: Simplify right side
    723,399.40x = 315,966,141,661.18
  5. Step 5: Solve for x
    x = 315,966,141,661.18/723,399.40
  6. Step 6: Final answer
    x = 436,779.66

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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.