Home / 789,820.40-1,185,605.40-490,638.80

Finding the Fourth Proportional to 789,820.40, 1,185,605.40 and 490,638.80

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Solution

The fourth proportional to 789,820.40, 1,185,605.40 and 490,638.80 is: 736,501.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,820.40 : 1,185,605.40 = 490,638.80 : x
  2. Step 2: Convert to fraction form
    789,820.40/1,185,605.40 = 490,638.80/x
  3. Step 3: Cross multiply
    789,820.40x = 1,185,605.40 × 490,638.80
  4. Step 4: Simplify right side
    789,820.40x = 581,704,010,729.52
  5. Step 5: Solve for x
    x = 581,704,010,729.52/789,820.40
  6. Step 6: Final answer
    x = 736,501.63

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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.