Home / 1,262,543.76-1,742,239.80-718,812.36

Finding the Fourth Proportional to 1,262,543.76, 1,742,239.80 and 718,812.36

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Solution

The fourth proportional to 1,262,543.76, 1,742,239.80 and 718,812.36 is: 991,920.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262,543.76 : 1,742,239.80 = 718,812.36 : x
  2. Step 2: Convert to fraction form
    1,262,543.76/1,742,239.80 = 718,812.36/x
  3. Step 3: Cross multiply
    1,262,543.76x = 1,742,239.80 × 718,812.36
  4. Step 4: Simplify right side
    1,262,543.76x = 1,252,343,502,323.93
  5. Step 5: Solve for x
    x = 1,252,343,502,323.93/1,262,543.76
  6. Step 6: Final answer
    x = 991,920.87

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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.