Home / 755,999.20-1,133,998.80-400,830.40

Finding the Fourth Proportional to 755,999.20, 1,133,998.80 and 400,830.40

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Solution

The fourth proportional to 755,999.20, 1,133,998.80 and 400,830.40 is: 601,245.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,999.20 : 1,133,998.80 = 400,830.40 : x
  2. Step 2: Convert to fraction form
    755,999.20/1,133,998.80 = 400,830.40/x
  3. Step 3: Cross multiply
    755,999.20x = 1,133,998.80 × 400,830.40
  4. Step 4: Simplify right side
    755,999.20x = 454,541,192,603.52
  5. Step 5: Solve for x
    x = 454,541,192,603.52/755,999.20
  6. Step 6: Final answer
    x = 601,245.60

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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.