Home / 5,390,440.70-8,085,661.05-5,319,581.90

Finding the Fourth Proportional to 5,390,440.70, 8,085,661.05 and 5,319,581.90

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Solution

The fourth proportional to 5,390,440.70, 8,085,661.05 and 5,319,581.90 is: 7,979,372.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390,440.70 : 8,085,661.05 = 5,319,581.90 : x
  2. Step 2: Convert to fraction form
    5,390,440.70/8,085,661.05 = 5,319,581.90/x
  3. Step 3: Cross multiply
    5,390,440.70x = 8,085,661.05 × 5,319,581.90
  4. Step 4: Simplify right side
    5,390,440.70x = 43,012,336,171,115
  5. Step 5: Solve for x
    x = 43,012,336,171,115/5,390,440.70
  6. Step 6: Final answer
    x = 7,979,372.85

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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.