Home / 1,290,007.80-1,934,513.82-425,235.06

Finding the Fourth Proportional to 1,290,007.80, 1,934,513.82 and 425,235.06

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Solution

The fourth proportional to 1,290,007.80, 1,934,513.82 and 425,235.06 is: 637,688.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,007.80 : 1,934,513.82 = 425,235.06 : x
  2. Step 2: Convert to fraction form
    1,290,007.80/1,934,513.82 = 425,235.06/x
  3. Step 3: Cross multiply
    1,290,007.80x = 1,934,513.82 × 425,235.06
  4. Step 4: Simplify right side
    1,290,007.80x = 822,623,100,318.53
  5. Step 5: Solve for x
    x = 822,623,100,318.53/1,290,007.80
  6. Step 6: Final answer
    x = 637,688.47

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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.