Home / 786,380.40-1,180,445.40-487,198.80

Finding the Fourth Proportional to 786,380.40, 1,180,445.40 and 487,198.80

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Solution

The fourth proportional to 786,380.40, 1,180,445.40 and 487,198.80 is: 731,340.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,380.40 : 1,180,445.40 = 487,198.80 : x
  2. Step 2: Convert to fraction form
    786,380.40/1,180,445.40 = 487,198.80/x
  3. Step 3: Cross multiply
    786,380.40x = 1,180,445.40 × 487,198.80
  4. Step 4: Simplify right side
    786,380.40x = 575,111,582,345.52
  5. Step 5: Solve for x
    x = 575,111,582,345.52/786,380.40
  6. Step 6: Final answer
    x = 731,340.18

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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.