Home / 1,385,710.80-2,078,857.80-439,177.20

Finding the Fourth Proportional to 1,385,710.80, 2,078,857.80 and 439,177.20

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Solution

The fourth proportional to 1,385,710.80, 2,078,857.80 and 439,177.20 is: 658,858.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,710.80 : 2,078,857.80 = 439,177.20 : x
  2. Step 2: Convert to fraction form
    1,385,710.80/2,078,857.80 = 439,177.20/x
  3. Step 3: Cross multiply
    1,385,710.80x = 2,078,857.80 × 439,177.20
  4. Step 4: Simplify right side
    1,385,710.80x = 912,986,947,802.16
  5. Step 5: Solve for x
    x = 912,986,947,802.16/1,385,710.80
  6. Step 6: Final answer
    x = 658,858.22

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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.