Home / 1,287,829.80-1,932,003.90-446,207.40

Finding the Fourth Proportional to 1,287,829.80, 1,932,003.90 and 446,207.40

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Solution

The fourth proportional to 1,287,829.80, 1,932,003.90 and 446,207.40 is: 669,400.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,829.80 : 1,932,003.90 = 446,207.40 : x
  2. Step 2: Convert to fraction form
    1,287,829.80/1,932,003.90 = 446,207.40/x
  3. Step 3: Cross multiply
    1,287,829.80x = 1,932,003.90 × 446,207.40
  4. Step 4: Simplify right side
    1,287,829.80x = 862,074,437,008.86
  5. Step 5: Solve for x
    x = 862,074,437,008.86/1,287,829.80
  6. Step 6: Final answer
    x = 669,400.91

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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.