Home / 1,051,400.80-1,576,640.40-420,104.80

Finding the Fourth Proportional to 1,051,400.80, 1,576,640.40 and 420,104.80

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Solution

The fourth proportional to 1,051,400.80, 1,576,640.40 and 420,104.80 is: 629,973.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,051,400.80 : 1,576,640.40 = 420,104.80 : x
  2. Step 2: Convert to fraction form
    1,051,400.80/1,576,640.40 = 420,104.80/x
  3. Step 3: Cross multiply
    1,051,400.80x = 1,576,640.40 × 420,104.80
  4. Step 4: Simplify right side
    1,051,400.80x = 662,354,199,913.92
  5. Step 5: Solve for x
    x = 662,354,199,913.92/1,051,400.80
  6. Step 6: Final answer
    x = 629,973.08

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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.