Home / 2,128,213.48-3,191,611.90-688,554.92

Finding the Fourth Proportional to 2,128,213.48, 3,191,611.90 and 688,554.92

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Solution

The fourth proportional to 2,128,213.48, 3,191,611.90 and 688,554.92 is: 1,032,603.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128,213.48 : 3,191,611.90 = 688,554.92 : x
  2. Step 2: Convert to fraction form
    2,128,213.48/3,191,611.90 = 688,554.92/x
  3. Step 3: Cross multiply
    2,128,213.48x = 3,191,611.90 × 688,554.92
  4. Step 4: Simplify right side
    2,128,213.48x = 2,197,600,076,475.55
  5. Step 5: Solve for x
    x = 2,197,600,076,475.55/2,128,213.48
  6. Step 6: Final answer
    x = 1,032,603.21

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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.