Home / 919,905.20-1,379,857.80-245,985.20

Finding the Fourth Proportional to 919,905.20, 1,379,857.80 and 245,985.20

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Solution

The fourth proportional to 919,905.20, 1,379,857.80 and 245,985.20 is: 368,977.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,905.20 : 1,379,857.80 = 245,985.20 : x
  2. Step 2: Convert to fraction form
    919,905.20/1,379,857.80 = 245,985.20/x
  3. Step 3: Cross multiply
    919,905.20x = 1,379,857.80 × 245,985.20
  4. Step 4: Simplify right side
    919,905.20x = 339,424,596,904.56
  5. Step 5: Solve for x
    x = 339,424,596,904.56/919,905.20
  6. Step 6: Final answer
    x = 368,977.80

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1.5x scale

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.