Home / 18,742,029.60-28,113,044.40-5,278,857.60

Finding the Fourth Proportional to 18,742,029.60, 28,113,044.40 and 5,278,857.60

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Solution

The fourth proportional to 18,742,029.60, 28,113,044.40 and 5,278,857.60 is: 7,918,286.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,742,029.60 : 28,113,044.40 = 5,278,857.60 : x
  2. Step 2: Convert to fraction form
    18,742,029.60/28,113,044.40 = 5,278,857.60/x
  3. Step 3: Cross multiply
    18,742,029.60x = 28,113,044.40 × 5,278,857.60
  4. Step 4: Simplify right side
    18,742,029.60x = 148,404,758,090,077.41
  5. Step 5: Solve for x
    x = 148,404,758,090,077.41/18,742,029.60
  6. Step 6: Final answer
    x = 7,918,286.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.