Home / 1,385,992.80-2,079,280.80-439,459.20

Finding the Fourth Proportional to 1,385,992.80, 2,079,280.80 and 439,459.20

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Solution

The fourth proportional to 1,385,992.80, 2,079,280.80 and 439,459.20 is: 659,281.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,992.80 : 2,079,280.80 = 439,459.20 : x
  2. Step 2: Convert to fraction form
    1,385,992.80/2,079,280.80 = 439,459.20/x
  3. Step 3: Cross multiply
    1,385,992.80x = 2,079,280.80 × 439,459.20
  4. Step 4: Simplify right side
    1,385,992.80x = 913,759,076,943.36
  5. Step 5: Solve for x
    x = 913,759,076,943.36/1,385,992.80
  6. Step 6: Final answer
    x = 659,281.26

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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.