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Finding the Fourth Proportional to 1,262,798.82, 1,742,663.94 and 718,934.59

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Solution

The fourth proportional to 1,262,798.82, 1,742,663.94 and 718,934.59 is: 992,130.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262,798.82 : 1,742,663.94 = 718,934.59 : x
  2. Step 2: Convert to fraction form
    1,262,798.82/1,742,663.94 = 718,934.59/x
  3. Step 3: Cross multiply
    1,262,798.82x = 1,742,663.94 × 718,934.59
  4. Step 4: Simplify right side
    1,262,798.82x = 1,252,861,395,661.26
  5. Step 5: Solve for x
    x = 1,252,861,395,661.26/1,262,798.82
  6. Step 6: Final answer
    x = 992,130.64

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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.