Home / 1,068,912-1,475,055.36-639,429.48

Finding the Fourth Proportional to 1,068,912, 1,475,055.36 and 639,429.48

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Solution

The fourth proportional to 1,068,912, 1,475,055.36 and 639,429.48 is: 882,386.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,068,912 : 1,475,055.36 = 639,429.48 : x
  2. Step 2: Convert to fraction form
    1,068,912/1,475,055.36 = 639,429.48/x
  3. Step 3: Cross multiply
    1,068,912x = 1,475,055.36 × 639,429.48
  4. Step 4: Simplify right side
    1,068,912x = 943,193,881,816.01
  5. Step 5: Solve for x
    x = 943,193,881,816.01/1,068,912
  6. Step 6: Final answer
    x = 882,386.84

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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.