Home / 1,242,503.17-1,863,778.09-389,555.91

Finding the Fourth Proportional to 1,242,503.17, 1,863,778.09 and 389,555.91

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Solution

The fourth proportional to 1,242,503.17, 1,863,778.09 and 389,555.91 is: 584,341.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,503.17 : 1,863,778.09 = 389,555.91 : x
  2. Step 2: Convert to fraction form
    1,242,503.17/1,863,778.09 = 389,555.91/x
  3. Step 3: Cross multiply
    1,242,503.17x = 1,863,778.09 × 389,555.91
  4. Step 4: Simplify right side
    1,242,503.17x = 726,045,769,888.01
  5. Step 5: Solve for x
    x = 726,045,769,888.01/1,242,503.17
  6. Step 6: Final answer
    x = 584,341.18

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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.