Home / 780,146.70-1,169,298.45-330,866.70

Finding the Fourth Proportional to 780,146.70, 1,169,298.45 and 330,866.70

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Solution

The fourth proportional to 780,146.70, 1,169,298.45 and 330,866.70 is: 495,909.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,146.70 : 1,169,298.45 = 330,866.70 : x
  2. Step 2: Convert to fraction form
    780,146.70/1,169,298.45 = 330,866.70/x
  3. Step 3: Cross multiply
    780,146.70x = 1,169,298.45 × 330,866.70
  4. Step 4: Simplify right side
    780,146.70x = 386,881,919,466.62
  5. Step 5: Solve for x
    x = 386,881,919,466.62/780,146.70
  6. Step 6: Final answer
    x = 495,909.19

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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.