Home / 905,999.80-1,358,999.70-486,095.80

Finding the Fourth Proportional to 905,999.80, 1,358,999.70 and 486,095.80

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Solution

The fourth proportional to 905,999.80, 1,358,999.70 and 486,095.80 is: 729,143.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,999.80 : 1,358,999.70 = 486,095.80 : x
  2. Step 2: Convert to fraction form
    905,999.80/1,358,999.70 = 486,095.80/x
  3. Step 3: Cross multiply
    905,999.80x = 1,358,999.70 × 486,095.80
  4. Step 4: Simplify right side
    905,999.80x = 660,604,046,371.26
  5. Step 5: Solve for x
    x = 660,604,046,371.26/905,999.80
  6. Step 6: Final answer
    x = 729,143.70

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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.