Home / 1,389,288.80-2,084,048.40-442,632.80

Finding the Fourth Proportional to 1,389,288.80, 2,084,048.40 and 442,632.80

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Solution

The fourth proportional to 1,389,288.80, 2,084,048.40 and 442,632.80 is: 663,985.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,288.80 : 2,084,048.40 = 442,632.80 : x
  2. Step 2: Convert to fraction form
    1,389,288.80/2,084,048.40 = 442,632.80/x
  3. Step 3: Cross multiply
    1,389,288.80x = 2,084,048.40 × 442,632.80
  4. Step 4: Simplify right side
    1,389,288.80x = 922,468,178,627.52
  5. Step 5: Solve for x
    x = 922,468,178,627.52/1,389,288.80
  6. Step 6: Final answer
    x = 663,985.90

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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.