Home / 680,055.60-1,020,121.80-206,756.40

Finding the Fourth Proportional to 680,055.60, 1,020,121.80 and 206,756.40

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Solution

The fourth proportional to 680,055.60, 1,020,121.80 and 206,756.40 is: 310,146.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,055.60 : 1,020,121.80 = 206,756.40 : x
  2. Step 2: Convert to fraction form
    680,055.60/1,020,121.80 = 206,756.40/x
  3. Step 3: Cross multiply
    680,055.60x = 1,020,121.80 × 206,756.40
  4. Step 4: Simplify right side
    680,055.60x = 210,916,710,929.52
  5. Step 5: Solve for x
    x = 210,916,710,929.52/680,055.60
  6. Step 6: Final answer
    x = 310,146.27

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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.