Home / 1,339,411.80-2,009,376.90-392,813.40

Finding the Fourth Proportional to 1,339,411.80, 2,009,376.90 and 392,813.40

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Solution

The fourth proportional to 1,339,411.80, 2,009,376.90 and 392,813.40 is: 589,296.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339,411.80 : 2,009,376.90 = 392,813.40 : x
  2. Step 2: Convert to fraction form
    1,339,411.80/2,009,376.90 = 392,813.40/x
  3. Step 3: Cross multiply
    1,339,411.80x = 2,009,376.90 × 392,813.40
  4. Step 4: Simplify right side
    1,339,411.80x = 789,310,171,970.46
  5. Step 5: Solve for x
    x = 789,310,171,970.46/1,339,411.80
  6. Step 6: Final answer
    x = 589,296.12

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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.