Home / 5,390,187.80-8,085,281.70-3,870,660.20

Finding the Fourth Proportional to 5,390,187.80, 8,085,281.70 and 3,870,660.20

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Solution

The fourth proportional to 5,390,187.80, 8,085,281.70 and 3,870,660.20 is: 5,805,990.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390,187.80 : 8,085,281.70 = 3,870,660.20 : x
  2. Step 2: Convert to fraction form
    5,390,187.80/8,085,281.70 = 3,870,660.20/x
  3. Step 3: Cross multiply
    5,390,187.80x = 8,085,281.70 × 3,870,660.20
  4. Step 4: Simplify right side
    5,390,187.80x = 31,295,378,081,978.34
  5. Step 5: Solve for x
    x = 31,295,378,081,978.34/5,390,187.80
  6. Step 6: Final answer
    x = 5,805,990.30

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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.