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Finding the Fourth Proportional to 1,907,488.86, 2,860,789.40 and 709,975.14

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Solution

The fourth proportional to 1,907,488.86, 2,860,789.40 and 709,975.14 is: 1,064,797.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,907,488.86 : 2,860,789.40 = 709,975.14 : x
  2. Step 2: Convert to fraction form
    1,907,488.86/2,860,789.40 = 709,975.14/x
  3. Step 3: Cross multiply
    1,907,488.86x = 2,860,789.40 × 709,975.14
  4. Step 4: Simplify right side
    1,907,488.86x = 2,031,089,336,921.69
  5. Step 5: Solve for x
    x = 2,031,089,336,921.69/1,907,488.86
  6. Step 6: Final answer
    x = 1,064,797.49

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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.