Home / 702,939.70-1,053,631.95-387,622.90

Finding the Fourth Proportional to 702,939.70, 1,053,631.95 and 387,622.90

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Solution

The fourth proportional to 702,939.70, 1,053,631.95 and 387,622.90 is: 581,005.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,939.70 : 1,053,631.95 = 387,622.90 : x
  2. Step 2: Convert to fraction form
    702,939.70/1,053,631.95 = 387,622.90/x
  3. Step 3: Cross multiply
    702,939.70x = 1,053,631.95 × 387,622.90
  4. Step 4: Simplify right side
    702,939.70x = 408,411,871,991.66
  5. Step 5: Solve for x
    x = 408,411,871,991.66/702,939.70
  6. Step 6: Final answer
    x = 581,005.56

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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.