Home / 1,319,333.68-1,820,679.96-715,721.68

Finding the Fourth Proportional to 1,319,333.68, 1,820,679.96 and 715,721.68

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Solution

The fourth proportional to 1,319,333.68, 1,820,679.96 and 715,721.68 is: 987,695.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,333.68 : 1,820,679.96 = 715,721.68 : x
  2. Step 2: Convert to fraction form
    1,319,333.68/1,820,679.96 = 715,721.68/x
  3. Step 3: Cross multiply
    1,319,333.68x = 1,820,679.96 × 715,721.68
  4. Step 4: Simplify right side
    1,319,333.68x = 1,303,100,119,713.53
  5. Step 5: Solve for x
    x = 1,303,100,119,713.53/1,319,333.68
  6. Step 6: Final answer
    x = 987,695.64

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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.