Home / 858,404.12-1,287,887.16-353,203.08

Finding the Fourth Proportional to 858,404.12, 1,287,887.16 and 353,203.08

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Solution

The fourth proportional to 858,404.12, 1,287,887.16 and 353,203.08 is: 529,920.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,404.12 : 1,287,887.16 = 353,203.08 : x
  2. Step 2: Convert to fraction form
    858,404.12/1,287,887.16 = 353,203.08/x
  3. Step 3: Cross multiply
    858,404.12x = 1,287,887.16 × 353,203.08
  4. Step 4: Simplify right side
    858,404.12x = 454,885,711,604.45
  5. Step 5: Solve for x
    x = 454,885,711,604.45/858,404.12
  6. Step 6: Final answer
    x = 529,920.23

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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.