Home / 1,392,001.80-2,085,378.30-715,781.40

Finding the Fourth Proportional to 1,392,001.80, 2,085,378.30 and 715,781.40

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Solution

The fourth proportional to 1,392,001.80, 2,085,378.30 and 715,781.40 is: 1,072,322.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,001.80 : 2,085,378.30 = 715,781.40 : x
  2. Step 2: Convert to fraction form
    1,392,001.80/2,085,378.30 = 715,781.40/x
  3. Step 3: Cross multiply
    1,392,001.80x = 2,085,378.30 × 715,781.40
  4. Step 4: Simplify right side
    1,392,001.80x = 1,492,674,999,103.62
  5. Step 5: Solve for x
    x = 1,492,674,999,103.62/1,392,001.80
  6. Step 6: Final answer
    x = 1,072,322.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.