Home / 1,400,072.80-1,931,758.32-788,101.60

Finding the Fourth Proportional to 1,400,072.80, 1,931,758.32 and 788,101.60

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Solution

The fourth proportional to 1,400,072.80, 1,931,758.32 and 788,101.60 is: 1,087,387.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400,072.80 : 1,931,758.32 = 788,101.60 : x
  2. Step 2: Convert to fraction form
    1,400,072.80/1,931,758.32 = 788,101.60/x
  3. Step 3: Cross multiply
    1,400,072.80x = 1,931,758.32 × 788,101.60
  4. Step 4: Simplify right side
    1,400,072.80x = 1,522,421,822,805.31
  5. Step 5: Solve for x
    x = 1,522,421,822,805.31/1,400,072.80
  6. Step 6: Final answer
    x = 1,087,387.61

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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.