Home / 1,378,565.52-1,902,516.84-805,668.72

Finding the Fourth Proportional to 1,378,565.52, 1,902,516.84 and 805,668.72

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Solution

The fourth proportional to 1,378,565.52, 1,902,516.84 and 805,668.72 is: 1,111,879.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,565.52 : 1,902,516.84 = 805,668.72 : x
  2. Step 2: Convert to fraction form
    1,378,565.52/1,902,516.84 = 805,668.72/x
  3. Step 3: Cross multiply
    1,378,565.52x = 1,902,516.84 × 805,668.72
  4. Step 4: Simplify right side
    1,378,565.52x = 1,532,798,307,261.25
  5. Step 5: Solve for x
    x = 1,532,798,307,261.25/1,378,565.52
  6. Step 6: Final answer
    x = 1,111,879.19

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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.