Home / 1,565,920.70-2,160,933.80-921,382.64

Finding the Fourth Proportional to 1,565,920.70, 2,160,933.80 and 921,382.64

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Solution

The fourth proportional to 1,565,920.70, 2,160,933.80 and 921,382.64 is: 1,271,486.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,565,920.70 : 2,160,933.80 = 921,382.64 : x
  2. Step 2: Convert to fraction form
    1,565,920.70/2,160,933.80 = 921,382.64/x
  3. Step 3: Cross multiply
    1,565,920.70x = 2,160,933.80 × 921,382.64
  4. Step 4: Simplify right side
    1,565,920.70x = 1,991,046,874,097.65
  5. Step 5: Solve for x
    x = 1,991,046,874,097.65/1,565,920.70
  6. Step 6: Final answer
    x = 1,271,486.40

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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.