Home / 1,242,681.75-1,864,045.31-389,734.34

Finding the Fourth Proportional to 1,242,681.75, 1,864,045.31 and 389,734.34

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Solution

The fourth proportional to 1,242,681.75, 1,864,045.31 and 389,734.34 is: 584,608.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,681.75 : 1,864,045.31 = 389,734.34 : x
  2. Step 2: Convert to fraction form
    1,242,681.75/1,864,045.31 = 389,734.34/x
  3. Step 3: Cross multiply
    1,242,681.75x = 1,864,045.31 × 389,734.34
  4. Step 4: Simplify right side
    1,242,681.75x = 726,482,457,354.05
  5. Step 5: Solve for x
    x = 726,482,457,354.05/1,242,681.75
  6. Step 6: Final answer
    x = 584,608.62

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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.