Home / 1,387,317.33-1,914,521.54-775,482.21

Finding the Fourth Proportional to 1,387,317.33, 1,914,521.54 and 775,482.21

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Solution

The fourth proportional to 1,387,317.33, 1,914,521.54 and 775,482.21 is: 1,070,178.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,317.33 : 1,914,521.54 = 775,482.21 : x
  2. Step 2: Convert to fraction form
    1,387,317.33/1,914,521.54 = 775,482.21/x
  3. Step 3: Cross multiply
    1,387,317.33x = 1,914,521.54 × 775,482.21
  4. Step 4: Simplify right side
    1,387,317.33x = 1,484,677,391,054.39
  5. Step 5: Solve for x
    x = 1,484,677,391,054.39/1,387,317.33
  6. Step 6: Final answer
    x = 1,070,178.65

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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.