Home / 3,118,438.50-4,303,445.13-1,687,654.50

Finding the Fourth Proportional to 3,118,438.50, 4,303,445.13 and 1,687,654.50

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Solution

The fourth proportional to 3,118,438.50, 4,303,445.13 and 1,687,654.50 is: 2,328,963.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118,438.50 : 4,303,445.13 = 1,687,654.50 : x
  2. Step 2: Convert to fraction form
    3,118,438.50/4,303,445.13 = 1,687,654.50/x
  3. Step 3: Cross multiply
    3,118,438.50x = 4,303,445.13 × 1,687,654.50
  4. Step 4: Simplify right side
    3,118,438.50x = 7,262,728,539,147.59
  5. Step 5: Solve for x
    x = 7,262,728,539,147.59/3,118,438.50
  6. Step 6: Final answer
    x = 2,328,963.21

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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.