Home / 2,209,618.80-3,312,095.40-861,260.40

Finding the Fourth Proportional to 2,209,618.80, 3,312,095.40 and 861,260.40

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Solution

The fourth proportional to 2,209,618.80, 3,312,095.40 and 861,260.40 is: 1,290,981.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,209,618.80 : 3,312,095.40 = 861,260.40 : x
  2. Step 2: Convert to fraction form
    2,209,618.80/3,312,095.40 = 861,260.40/x
  3. Step 3: Cross multiply
    2,209,618.80x = 3,312,095.40 × 861,260.40
  4. Step 4: Simplify right side
    2,209,618.80x = 2,852,576,609,042.16
  5. Step 5: Solve for x
    x = 2,852,576,609,042.16/2,209,618.80
  6. Step 6: Final answer
    x = 1,290,981.33

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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.