Home / 1,086,912.80-1,630,369.20-686,254.40

Finding the Fourth Proportional to 1,086,912.80, 1,630,369.20 and 686,254.40

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Solution

The fourth proportional to 1,086,912.80, 1,630,369.20 and 686,254.40 is: 1,029,381.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,912.80 : 1,630,369.20 = 686,254.40 : x
  2. Step 2: Convert to fraction form
    1,086,912.80/1,630,369.20 = 686,254.40/x
  3. Step 3: Cross multiply
    1,086,912.80x = 1,630,369.20 × 686,254.40
  4. Step 4: Simplify right side
    1,086,912.80x = 1,118,848,037,124.48
  5. Step 5: Solve for x
    x = 1,118,848,037,124.48/1,086,912.80
  6. Step 6: Final answer
    x = 1,029,381.60

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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.