Home / 525,019.20-787,917.60-209,702.40

Finding the Fourth Proportional to 525,019.20, 787,917.60 and 209,702.40

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Solution

The fourth proportional to 525,019.20, 787,917.60 and 209,702.40 is: 314,708.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,019.20 : 787,917.60 = 209,702.40 : x
  2. Step 2: Convert to fraction form
    525,019.20/787,917.60 = 209,702.40/x
  3. Step 3: Cross multiply
    525,019.20x = 787,917.60 × 209,702.40
  4. Step 4: Simplify right side
    525,019.20x = 165,228,211,722.24
  5. Step 5: Solve for x
    x = 165,228,211,722.24/525,019.20
  6. Step 6: Final answer
    x = 314,708.89

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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.