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Finding the Fourth Proportional to 435,764.40, 653,646.60 and 330,010.80

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Solution

The fourth proportional to 435,764.40, 653,646.60 and 330,010.80 is: 495,016.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,764.40 : 653,646.60 = 330,010.80 : x
  2. Step 2: Convert to fraction form
    435,764.40/653,646.60 = 330,010.80/x
  3. Step 3: Cross multiply
    435,764.40x = 653,646.60 × 330,010.80
  4. Step 4: Simplify right side
    435,764.40x = 215,710,437,383.28
  5. Step 5: Solve for x
    x = 215,710,437,383.28/435,764.40
  6. Step 6: Final answer
    x = 495,016.20

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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.