Home / 859,319.12-1,288,667.64-410,021.84

Finding the Fourth Proportional to 859,319.12, 1,288,667.64 and 410,021.84

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Solution

The fourth proportional to 859,319.12, 1,288,667.64 and 410,021.84 is: 614,884.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,319.12 : 1,288,667.64 = 410,021.84 : x
  2. Step 2: Convert to fraction form
    859,319.12/1,288,667.64 = 410,021.84/x
  3. Step 3: Cross multiply
    859,319.12x = 1,288,667.64 × 410,021.84
  4. Step 4: Simplify right side
    859,319.12x = 528,381,876,901.26
  5. Step 5: Solve for x
    x = 528,381,876,901.26/859,319.12
  6. Step 6: Final answer
    x = 614,884.35

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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.