Home / 1,565,918.50-2,160,930.78-921,380.44

Finding the Fourth Proportional to 1,565,918.50, 2,160,930.78 and 921,380.44

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Solution

The fourth proportional to 1,565,918.50, 2,160,930.78 and 921,380.44 is: 1,271,483.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,565,918.50 : 2,160,930.78 = 921,380.44 : x
  2. Step 2: Convert to fraction form
    1,565,918.50/2,160,930.78 = 921,380.44/x
  3. Step 3: Cross multiply
    1,565,918.50x = 2,160,930.78 × 921,380.44
  4. Step 4: Simplify right side
    1,565,918.50x = 1,991,039,352,885.94
  5. Step 5: Solve for x
    x = 1,991,039,352,885.94/1,565,918.50
  6. Step 6: Final answer
    x = 1,271,483.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.