Home / 820,205.20-1,230,307.80-460,006.30

Finding the Fourth Proportional to 820,205.20, 1,230,307.80 and 460,006.30

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Solution

The fourth proportional to 820,205.20, 1,230,307.80 and 460,006.30 is: 690,009.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,205.20 : 1,230,307.80 = 460,006.30 : x
  2. Step 2: Convert to fraction form
    820,205.20/1,230,307.80 = 460,006.30/x
  3. Step 3: Cross multiply
    820,205.20x = 1,230,307.80 × 460,006.30
  4. Step 4: Simplify right side
    820,205.20x = 565,949,338,939.14
  5. Step 5: Solve for x
    x = 565,949,338,939.14/820,205.20
  6. Step 6: Final answer
    x = 690,009.45

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Similar ratio
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1.5x scale

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.