Home / 1,291,891.76-1,782,889.23-718,931.93

Finding the Fourth Proportional to 1,291,891.76, 1,782,889.23 and 718,931.93

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Solution

The fourth proportional to 1,291,891.76, 1,782,889.23 and 718,931.93 is: 992,169.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,891.76 : 1,782,889.23 = 718,931.93 : x
  2. Step 2: Convert to fraction form
    1,291,891.76/1,782,889.23 = 718,931.93/x
  3. Step 3: Cross multiply
    1,291,891.76x = 1,782,889.23 × 718,931.93
  4. Step 4: Simplify right side
    1,291,891.76x = 1,281,775,988,881.66
  5. Step 5: Solve for x
    x = 1,281,775,988,881.66/1,291,891.76
  6. Step 6: Final answer
    x = 992,169.80

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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.