Home / 1,260,325.80-1,890,488.70-419,007.40

Finding the Fourth Proportional to 1,260,325.80, 1,890,488.70 and 419,007.40

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Solution

The fourth proportional to 1,260,325.80, 1,890,488.70 and 419,007.40 is: 628,511.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,325.80 : 1,890,488.70 = 419,007.40 : x
  2. Step 2: Convert to fraction form
    1,260,325.80/1,890,488.70 = 419,007.40/x
  3. Step 3: Cross multiply
    1,260,325.80x = 1,890,488.70 × 419,007.40
  4. Step 4: Simplify right side
    1,260,325.80x = 792,128,754,916.38
  5. Step 5: Solve for x
    x = 792,128,754,916.38/1,260,325.80
  6. Step 6: Final answer
    x = 628,511.10

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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.