Home / 1,565,922.70-2,160,936.54-921,384.64

Finding the Fourth Proportional to 1,565,922.70, 2,160,936.54 and 921,384.64

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Solution

The fourth proportional to 1,565,922.70, 2,160,936.54 and 921,384.64 is: 1,271,489.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,565,922.70 : 2,160,936.54 = 921,384.64 : x
  2. Step 2: Convert to fraction form
    1,565,922.70/2,160,936.54 = 921,384.64/x
  3. Step 3: Cross multiply
    1,565,922.70x = 2,160,936.54 × 921,384.64
  4. Step 4: Simplify right side
    1,565,922.70x = 1,991,053,735,970.75
  5. Step 5: Solve for x
    x = 1,991,053,735,970.75/1,565,922.70
  6. Step 6: Final answer
    x = 1,271,489.16

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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.