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Finding the Fourth Proportional to 1,907,487.85, 2,860,787.90 and 709,974.13

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Solution

The fourth proportional to 1,907,487.85, 2,860,787.90 and 709,974.13 is: 1,064,795.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,907,487.85 : 2,860,787.90 = 709,974.13 : x
  2. Step 2: Convert to fraction form
    1,907,487.85/2,860,787.90 = 709,974.13/x
  3. Step 3: Cross multiply
    1,907,487.85x = 2,860,787.90 × 709,974.13
  4. Step 4: Simplify right side
    1,907,487.85x = 2,031,085,404,019.13
  5. Step 5: Solve for x
    x = 2,031,085,404,019.13/1,907,487.85
  6. Step 6: Final answer
    x = 1,064,795.98

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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.