Home / 763,327.80-1,144,991.70-390,079.80

Finding the Fourth Proportional to 763,327.80, 1,144,991.70 and 390,079.80

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Solution

The fourth proportional to 763,327.80, 1,144,991.70 and 390,079.80 is: 585,119.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,327.80 : 1,144,991.70 = 390,079.80 : x
  2. Step 2: Convert to fraction form
    763,327.80/1,144,991.70 = 390,079.80/x
  3. Step 3: Cross multiply
    763,327.80x = 1,144,991.70 × 390,079.80
  4. Step 4: Simplify right side
    763,327.80x = 446,638,133,337.66
  5. Step 5: Solve for x
    x = 446,638,133,337.66/763,327.80
  6. Step 6: Final answer
    x = 585,119.70

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Similar ratio
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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.