Home / 3,115,220.40-4,672,830.60-1,320,130.80

Finding the Fourth Proportional to 3,115,220.40, 4,672,830.60 and 1,320,130.80

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Solution

The fourth proportional to 3,115,220.40, 4,672,830.60 and 1,320,130.80 is: 1,980,196.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115,220.40 : 4,672,830.60 = 1,320,130.80 : x
  2. Step 2: Convert to fraction form
    3,115,220.40/4,672,830.60 = 1,320,130.80/x
  3. Step 3: Cross multiply
    3,115,220.40x = 4,672,830.60 × 1,320,130.80
  4. Step 4: Simplify right side
    3,115,220.40x = 6,168,747,598,242.48
  5. Step 5: Solve for x
    x = 6,168,747,598,242.48/3,115,220.40
  6. Step 6: Final answer
    x = 1,980,196.20

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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.